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  • LGPL License in commercial application

    - by Jacob
    I have searched around but I don't seem to be able to get a clear answer on my questions that I understand. I want to use the Xuggler library in my application, which is licensed either GPL or LGPL depending on whether I compile it myself. I don't intend to edit the library If I compile it myself and thus get a LGPL version of the library, can I use it in a commercial application without having to distribute the source code of my application? Furthermore, do I have to give my application the LGPL license as well? What other problems might using this library give me?

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  • Oracle VDI Seminar - June-30

    - by mprove
    More from Andy Hall about Oracle VDI:  Oracle Virtual Desktop Infrastructure allows you to bring your desktop environments under control by hosting and managing them centrally in the data center. Users then connect to their desktops over the network using their existing PCs and simple client software, or with Oracle's Sun Ray Clients. Virtual desktops provide a number of benefits, including:  Cost reductions by allowing global or local changes and updates to the desktop environment from a centralized management location.  Better security by keeping sensitive data off of individual computers and retaining it safely in the data center.  Improved availability and business continuity because workers can access their desktops from nearly anywhere.  Join us to get the latest updates on Oracle Virtual Desktop Infrastructure and learn how moving to a virtualized desktop environment can help your organization, today and into the future.  Speaker:  Andy Hall - Virtual Desktop Infrastructure Product Management, Oracle Event Date: 06/30/2011 09:00 AM Pacific Daylight Time Register here_

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  • What's the difference between stateful and stateless?

    - by Pankaj Upadhyay
    The books and documentation on the MVC just heap on using the Stateful and Stateless terms. To be honest, i am just unable to grab the idea of it, what the books are talking about. They don't give an example to understand any of the either state, rather than just telling that HTTP is stateless and with ASP.NET MVC microsoft is going along with it. Am I missing some fundamental knowledge, as i can't understand what is stateful and why is stateful and same goes for stateless. A simple and short example that talks about a control like button or textbox can be simplify the understanding i suppose.

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  • The next step for a graduate?

    - by Michael Hobbs
    I will complete my degree in Computer Science in July of 2013 however I will have two years of military service left. I would like to get some hands on C#/C++ programming experience in the mean time. I have been looking around the web at all the open source project that are out there. There are literally 10's of thousands. How would you go about picking one that is: A) good for a graduate level programmer B) will probably go somewhere, and C) are willing to take a novice under their wing. I would even be happy to work for a company for free, remotely as a debugger, tester, or what have you. As a side note would prefer to stick in the C# realm but understand I need to branch out at the same time.

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  • Multithreading synchronization interview question: Find n words given m threads

    - by rplusg
    I came across this question: You are given a paragraph , which contain n number of words, you are given m threads. What you need to do is , each thread should print one word and give the control to next thread, this way each thread will keep on printing one word , in case last thread come, it should invoke the first thread. Printing will repeat until all the words are printed in paragraph. Finally all threads should exit gracefully. What kind of synchronization will use? I strongly feel we cannot take any advantage of threads here but interviewer is trying to understand my synchronization skills? No need of code, just put some thoughts. I will implement by myself.

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  • SSIS Design Pattern: Producing a Footer Row

    - by andyleonard
    The following is an excerpt from SSIS Design Patterns (now available in the UK!) Chapter 7, Flat File Source Patterns. The only planned appearance of all five authors presenting on SSIS Design Patterns is the SSIS Design Patterns day-long pre-conference session at the PASS Summit 2012 . Register today . Let’s look at producing a footer row and adding it to the data file. For this pattern, we will leverage project and package parameters. We will also leverage the Parent-Child pattern, which will be...(read more)

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  • VPN disconnected: resolv.conf not refreshed

    - by cwall
    I connect to VPN using vpnc. When VPN disconnects, either via time out or the session limit is reached, VPN is terminated, but resolve.conf continues to contain references to my VPN network. resolv.conf before VPN is connected: nameserver 127.0.0.1 search mylocalnetwork resolv.conf after VPN is connected and remains once VPN is lost: nameserver X.X.X.X nameserver X.X.X.Z nameserver 127.0.0.1 search internal.mycompany.com mylocalnetwork In 10.04, when VPN lost, I'd run this script to refresh resolve.conf: 7$ cat bin/refreshResolvconf.sh #!/bin/bash #if [ -e /etc/resolvconf/run/interface/tun0 -a "`pidof vpnc`" == "" ]; then /sbin/resolvconf -d tun0; fi if [ -e /etc/resolvconf/run/interface/tun0 -a "`pidof vpnc`" == "" ] then /sbin/resolvconf -d tun0; echo "Refreshed resolv.conf" fi But, resolveconf changed in 12.04 changed, so this script is no longer applicable. To resolve, I manually edit resolve.conf or turn off/on my connection via "gnome-control-center network". Anyone else have the same problem? How can resolv.conf be updated post-VPN disconnect?

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  • Online examples for software design diagrams

    - by Gerenuk
    Do you know where I can find a good example of software design diagrams and specs on the internet? Like UML, specs and similar. I'd like to understand this approach better. Before I just started coding and now I'd like plan more in advance. By diagrams I don't mean made-up examples, but something that would actually be used. Also it shouldn't be so trivial that there is no use of using diagrams. Ideally it shouldn't be too large either. Do you know a good online source? (this question is about online resources and specific examples only. it is not asking about books or advise how to learn software design.)

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  • A Visual Studio Release Grows in Brooklyn

    - by andrewbrust
    Yesterday, Microsoft held its flagship launch event for Office 2010 in Manhattan.  Today, the Redmond software company is holding a local launch event for Visual Studio (VS) 2010, in Brooklyn.  How come information workers get the 212 treatment and developers are relegated to 718? Well, here’s the thing: the Brooklyn Marriott is actually a great place for an event, but you need some intimate knowledge of New York City to know that.  NBC’s Studio 8H, where the Office launch was held yesterday (and from where SNL is broadcast) is a pretty small venue, but you’d need some inside knowledge to recognize that.  Likewise, while Office 2010 is a product whose value is apparent.  Appreciating VS 2010’s value takes a bit more savvy.  Setting aside its year-based designation, this release of VS, counting the old Visual Basic releases, is the 10th version of the product.  How can a developer audience get excited about an integrated development environment when it reaches double-digit version numbers?  Well, it can be tough.  Luckily, Microsoft sent Jay Schmelzer, a Group Program Manager from the Visual Studio team in Redmond, to come tell the Brooklyn audience why they should be excited. Turns out there’s a lot of reasons.  Support fro SharePoint development is a big one.  In previous versions of VS, that support has been anemic, at best.  Shortage of SharePoint developers is a huge issue in the industry, and this should help.  There’s also built in support for Windows Azure (Microsoft’s cloud platform) and, through a download, support for the forthcoming Windows Phone 7 platform.  ASP.NET MVC, a “close-to-the-metal” Web development option that does away with the Web Forms abstraction layer, has a first-class presence in VS.  So too does jQuery, the Open Source environment that makes JavaScript development a breeze.  The jQuery support is so good that Microsoft now contributes to that Open Source project and offers IntelliSense support for it in the code editor. Speaking of the VS code editor, it now supports multi-monitor setups, zoom-in, and block selection.  If you’re not a developer, this may sound confusing and minute.  I’ll just say that for people who are developers these are little things that really contribute to productivity, and that translates into lower development costs. The really cool demo, though, was around Visual Studio 2010’s new debugging features.  This stuff is hard to showcase, but I believe it’s truly breakthrough technology: imagine being able to step backwards in time to see what might have caused a bug.  Cool?  Now imagine being able to do that, even if you weren’t the tester and weren’t present while the testing was being done.  Then imagine being able to see a video screen capture of what the tester was doing with your app when the bug occurred.  VS 2010 allows all that.  This could be the demise of the IWOMM (“it works on my machine”) syndrome. After the keynote, I asked Schmelzer if any of Microsoft’s competitors have debugging tools that come close to VS 2010’s.  His answer was an earnest “we don’t think so.”  If that’s true, that’s a big deal, and a huge advantage for developer teams who adopt it.  It will make software development much cheaper and more efficient.  Kind of like holding a launch event at the Brooklyn Marriott instead of 30 Rock in Manhattan! VS 2010 (version 10) and Office 2010 (version 14) aren’t the only new product versions Microsoft is releasing right now.  There’s also SQL Server 2008 R2 (version 10.5), Exchange 2010 (version 8, I believe), SharePoint 2010 (version 4) and, of course, Windows 7.  With so many new versions at such levels of maturity, I think it’s fair to say Microsoft has reached middle-age.  How does a company stave off a potential mid-life crisis, especially when with young Turks like Google coming along and competing so fiercely?  Hard to say.  But if focusing on core value, including value that’s hard to play into a sexy demo, is part oft the answer, then Microsoft’s doing OK.  And if some new tricks, like Windows Phone 7, can gain some traction, that might round things out nicely. Are the legacy products old tricks, or are they revised classics?  I honestly don’t know, because it’s the market’s prerogative to pass that judgement.  I can say this though: based on today’s show, I think Microsoft’s been doing its homework.

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  • How to make a link to a .desktop [Desktop Entry] file

    - by Gonzalo
    I made a link on my Desktop to the launcher file "Compiz" in /usr/share/applications/. When I try to execute it I get: "The application launcher "Link to compiz.desktop" has not been marked as trusted. If you do not know the source of this file, launching it may be unsafe." So my question is how to make such a launcher on my Desktop? Otherwise, what kind of file are these [Desktop Entry] files and how can they be executed (by double clicking on them) if they have permissions such as: -rw-r--r-- 1 root root 396 2010-12-17 15:23 compiz.desktop

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  • Bug Tracking Etiquette - Necromancy or Duplicate?

    - by Shauna
    I came across a really old (2+ years) feature request issue in a bug tracker for an open source project that was marked as "resolved (won't fix)" due to the lack of tools required to make the requested enhancement. In the time elapsed since that determination was made, new tools have been developed that would allow it to be resolved, and I'd like to bring that to the attention of the community for that application. However, I'm not sure as to what the generally accepted etiquette is for bug tracking in cases like this. Obviously, if the system explicitly states to not duplicate and will actively mark new items as duplicates (much in the way the SE sites do), then the answer would be to follow what the system says. But what about when the system doesn't explicitly say that, or a new user can't easily find a place that says with the system's preference is? Is it generally considered better to err on the side of duplication or necromancy? Does this differ depending on whether it's a bug or a feature request?

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  • Is it needed to have your blog title and description in H1 and H2

    - by Saif Bechan
    I have read an article that states that it is not necessary to have your blog title and description on your website at all. Just have the titles of the posts in h1, on the index and the post page. And on the post page have your different sections started with h2. Widget headers start with h3. Title and description are most of the time in the logo image. I have looked at the source of my favorite blog, http://net.tutsplus.com, and I see they do the same. Is this recommended?

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  • Drawing an outline around an arbitrary group of hexagons

    - by Perky
    Is there an algorithm for drawing an outline around around an arbitrary group of hexagons? The polygon outline drawn may be concave. See the images below, the green line is what I am trying to achieve. The hexagons are stored as vertices and drawn as polygons. Edit: I've uploaded images that should explain more. I want to favour convex hulls because it's conveys an area of control more quickly. Each hexagon is stored in a multidimensional array so they all have x and y coordinates, I can easily find adjacent hexagons and the opposite vertex, i.e. adjacentHexagon = getAdjacentHexagon( someHexagon, NORTHWEST ) if there isn't a hexagon immediately adjacent it will continue to search in that direction until it finds one or hits the map edges.

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  • How is the iOS support in UDK compared to Unity?

    - by Joe
    I have some significant experience in Unity for web clients, but I'm skeptical about the 3K$ price tag to create/deploy iOS games. I noticed UDK now supports iOS, and appears to have "free" version control- and it's only 100$ from what I can tell. My primary question is: Does UDK make iOS development and deployment easy, or do you have to jump through a couple of hoops to make it work? A few side questions not worth another post: How hard is the transition from Unity to UDK? Is UnrealScript easy to pick up from a C/C# background? Does the UDK have good documentation compared to Unity?

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  • How many lines of code can a C# developer produce per month?

    - by lox
    An executive at my workplace asked me and my group of developers the question: How many lines of code can a C# developer produce per month? An old system was to be ported to C# and he would like this measure as part of the project planning. From some (apparently creditable) source he had the answer of "10 SLOC/month" but he was not happy with that. The group agreed that this was nearly impossible to specify because it would depend on a long list of circumstances. But we could tell that the man would not leave (or be very disappointed in us) if we did not come up with an answer suiting him better. So he left with the many times better answer of "10 SLOC/day" Can this question be answered? (offhand or even with some analysis)

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  • Where can I find accessible bug/issue databases with complete revision history

    - by namenlos
    I'm performing some research and analysis on bug/issue tracking databases and more specifically on how programmers and teams of programmers actually interact with them. What I'm looking for involves understanding how those databases change over time. So what I don't need for example: is a database of all the bugs of some open source project as the bugs exist today. What I do need is a complete set of revision history for every issue/bug in the database. This would enable me to pick a specific datetime and say here were the list of all the issues/bugs that existed at that moment in time. Anyway know of some publicly accessible issue/bug databases that expose this revision data? Ideally, the revision would look something like this (shown for a single bug, with two revisions) ISSUEID PRI SEV ASSIGNEDTO MODIFIEDON VALIDUNTIL 1 2 2 mel apr-1-2010:5pm apr-1-2010:6pm 1 2 3 steve apr-1-2010:6pm NULL

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  • "mountall: Disconnected from Plymouth" error in VirtualBox

    - by jonpavelich
    I installed Ubuntu (from the 11.10 Alternate CD, selecting "command-line only" mode before installing) in Virtualbox (Mac OS X Lion host) like I've done numerous times before. Installation finished without any problems, and I rebooted into my new system. Got the splash screen, it loaded, and right where it should've given me a login prompt, I got (in orange) mountall: Disconnected from Plymouth. I can just hit control + alt (option) + F1 to get the login prompt on tty1, and the system acts normally. This happens on every boot. The disk has two partitions, a 250 MB /boot partition and a 99.75 GB encrypted partition. The encrypted partition has LVM on it. One volume group, 3 volumes (swap, / (root filesystem) , and /home. At first I thought the error was from one of the LVM volumes not mounting, but they are all accessible. It isn't a critical error, but it is annoying. Any ideas?

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  • Revert F3 and F4 behavior in byobu?

    - by James Zimmerman II
    With a fresh 12.04 installation of Ubuntu, byobu's interpretation of the function keys seems to have changed. F3 and F4 will still change the active tab on the current session, but it changes it for all connections. Previously, if you have two active connections to the same user (same session) with User 1 on shell 0/tab 0 and User 2 on shell 0/tab 0, when User 2 pressed F3 , they would be changed to tab 1 while User 1 would remain on tab 0. With the latest version in 12.04, when User 2 presses F3, all connected users are moved to shell 1/tab 1. Is there any way to re-enable the old behavior? I have looked at the /etc/byobu directory and only found backend and socketdir files there. Toggling backend between tmux and screen did not seem to render any difference. Anyone know what, if any, configuration option exist to control this?

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  • Beggining OpenGL vs beggining DirectX and some question about the philosophical difference between them

    - by jokoon
    I'm begginning with Direct X at school, and my teacher said it was harder to begin with than OpenGL, but I read several things that in fact, Direct X was more advanced than OpenGL in terms of recent graphic cards features. Since I'm far from wanting to do top notch effects, which can already be implemented with existing engines and/or shaders, I wanted to know your opinion: Can OpenGL be considered like a more basic, KISS, hardware agnostic, graphic library to just do 3D with acceleration, and consider DirectX like a top notch, game-oriented graphic API that will always support the next-gen 3D chips ? Citation from wikipedia on http://en.wikipedia.org/wiki/Id_Tech_5 : John Carmack mentioned in his keynote at QuakeCon 2007 that the id Tech 5 engine will not be using the DirectX 10 API. I don't want to seem like I'm minding open source because Carmack does and because he is famous, it's just that android and iPhone are out there, and Direct X doesn't seems to me to be the necessary API to know, since Windows supports OpenGL, and since the 360 is just a console among other consoles.

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  • Can I use Google Search to determine if my website contains original or copied content?

    - by Bas van Vught
    I have a few websites from customers that have (partially) the same content as other websites. I plan on rewriting all content that is not original, but how do I know if my websites have original content, or content that's been copied from another website? My customers say all the content is original, but I have my doubts to be honest. They often let other people who don't work there anymore write content for the sites. What I did so far is copy a line from my website that can be found in other websites as well and pasted it into Google Search. If my website is the first link, would it be considered the original source?

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  • SO-Aware @ TechReady (Microsoft Event)

    - by SURESH GIRIRAJAN
    A session on SO-Aware is presented at Microsoft TechReady event this week check here for more details : http://tellagostudios.com/blog/so-aware-highlighted-microsoft-techready Check here for more details on SO-Aware and how to leverage within your enterprise if you’re using BizTalk Server, WCF Services and services build on Azure. It provides lot of capability such as: o    Centralized service repository o    Centralized configuration management o    Service testing o    Monitoring o    Transparent integration with technologies such as Visual Studio, BizTalk Server, Windows Server & Azure AppFabric among many others o    SO-Aware Test Workbench provides developers with a visually rich environment to model and control the execution of load and functional tests in a SOA infrastructure. This tool includes the first native WCF load testing engine allowing developers to transparently load test applications built on Microsoft's service oriented technologies such as WCF, BizTalk Server or the Windows Server or Azure AppFabric.

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  • Moving DataSets through BizTalk

    - by EltonStoneman
    [Source: http://geekswithblogs.net/EltonStoneman] Yuck. But sometimes you have to, so here are a couple of things to bear in mind: Schemas Point a codegen tool at a WCF endpoint which exposes a DataSet and it will generate an XSD which describes the DataSet like this: <xs:elementminOccurs="0"name="GetDataSetResult"nillable="true">  <xs:complexType>     <xs:annotation>       <xs:appinfo>         <ActualTypeName="DataSet"                     Namespace="http://schemas.datacontract.org/2004/07/System.Data"                     xmlns="http://schemas.microsoft.com/2003/10/Serialization/" />       </xs:appinfo>     </xs:annotation>     <xs:sequence>       <xs:elementref="xs:schema" />       <xs:any />     </xs:sequence>  </xs:complexType> </xs:element>  In a serialized instance, the element of type xs:schema contains a full schema which describes the structure of the DataSet – tables, columns etc. The second element, of type xs:any, contains the actual content of the DataSet, expressed as DiffGrams: <GetDataSetResult>  <xs:schemaid="NewDataSet"xmlns:xs="http://www.w3.org/2001/XMLSchema"xmlns=""xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">     <xs:elementname="NewDataSet"msdata:IsDataSet="true"msdata:UseCurrentLocale="true">       <xs:complexType>         <xs:choiceminOccurs="0"maxOccurs="unbounded">           <xs:elementname="Table1">             <xs:complexType>               <xs:sequence>                 <xs:elementname="Id"type="xs:string"minOccurs="0" />                 <xs:elementname="Name"type="xs:string"minOccurs="0" />                 <xs:elementname="Date"type="xs:string"minOccurs="0" />               </xs:sequence>             </xs:complexType>           </xs:element>         </xs:choice>       </xs:complexType>     </xs:element>  </xs:schema>  <diffgr:diffgramxmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1"xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">     <NewDataSetxmlns="">       <Table1diffgr:id="Table11"msdata:rowOrder="0"diffgr:hasChanges="inserted">         <Id>377fdf8d-cfd1-4975-a167-2ddb41265def</Id>         <Name>157bc287-f09b-435f-a81f-2a3b23aff8c4</Name>         <Date>a5d78d83-6c9a-46ca-8277-f2be8d4658bf</Date>       </Table1>     </NewDataSet>  </diffgr:diffgram> </GetDataSetResult> Put the XSD into a BizTalk schema and it will fail to compile, giving you error: The 'http://www.w3.org/2001/XMLSchema:schema' element is not declared. You should be able to work around that, but I've had no luck in BizTalk Server 2006 R2 – instead you can safely change that xs:schema element to be another xs:any type: <xs:elementminOccurs="0"name="GetDataSetResult"nillable="true">  <xs:complexType>     <xs:sequence>       <xs:any />       <xs:any />     </xs:sequence>  </xs:complexType> </xs:element>  (This snippet omits the annotation, but you can leave it in the schema). For an XML instance to pass validation through the schema, you'll also need to flag the any attributes so they can contain any namespace and skip validation:  <xs:elementminOccurs="0"name="GetDataSetResult"nillable="true">  <xs:complexType>     <xs:sequence>       <xs:anynamespace="##any"processContents="skip" />       <xs:anynamespace="##any"processContents="skip" />     </xs:sequence>  </xs:complexType> </xs:element>  You should now have a compiling schema which can be successfully tested against a serialised DataSet. Transforms If you're mapping a DataSet element between schemas, you'll need to use the Mass Copy Functoid to populate the target node from the contents of both the xs:any type elements on the source node: This should give you a compiled map which you can test against a serialized instance. And if you have a .NET consumer on the other side of the mapped BizTalk output, it will correctly deserialize the response into a DataSet.

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  • Install a different version of a package

    - by Michael Wiles
    I'm running lucid server and have installed tomcat. The version it installed is 6.0.24-2ubuntu1.6. Is this the version I'm tied to? Is it possible to install a more recent version? The one available from maverick is 6.0.28. Maybe I can add a source to provide my lucid install with this version? In the package manager user interface I can "force version". Is it possible to force version from command line alternative as well?

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  • Scalable distributed file system for blobs like images and other documents

    - by Pinnacle
    Cassandra & HBase both do not efficiently support storage of blobs like images. Storing directly on HDFS stresses the Namenode because of huge number of files. Facebook uses Haystack for images and attachments storage, but this is not open source. So is Lustre a good choice for distributed blob storage? I have read that Amazon S3 is used by many, but this would cost money and personally, I would not like to rely on third party system. What are other suggestions?

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  • Domain appears taken when searched from a different host, but whois says 'No match'

    - by Nanda
    I have recently registered a new .name domain. It is just myfirstname.name, something like nanda.name. My debit card has been billed, but my domain control panel doesn't show any information regarding the new domain. I have raised a ticket with their support and there is no response yet. It's been 3 days. I checked some other registrars and almost all of them say that nanda.name is taken, but when I search whois either from my command line or the numerous whois web services, I get No match as answer each time. What gives? PS : I should add that this registrar's support is known to suck, which, by the time I found, is a bit late.

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