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• Error while running Jetty Server on port 80 as non root user

  - by user75016

  All, I was trying to setup jetty on port 80 but its giving exception saying permission denied as below. I have setup jetty to work with setuid and configured start.ini as follows: OPTIONS=Server,jsp,jmx,resources,websocket,ext,plus,annotations,jta,jdbc,setuid (below as first configuration file in start.ini) etc/jetty-setuid.xml and jetty-setuid.xml file with username and group name of non root user. 2012-07-03 15:29:02.411:INFO:oejdp.ScanningAppProvider:Deployment monitor /opt/jetty-hightide-8.1.3.v20120416/contexts at interval 1 2012-07-03 15:29:02.454:WARN:oejuc.AbstractLifeCycle:FAILED [email protected]:80: java.net.SocketException: Permission denied java.net.SocketException: Permission denied at sun.nio.ch.Net.bind(Native Method) at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:126) at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59) at org.eclipse.jetty.server.nio.SelectChannelConnector.open(SelectChannelConnector.java:182) at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:311) at org.eclipse.jetty.server.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:260) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59) at org.eclipse.jetty.server.Server.doStart(Server.java:273) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59) at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1215) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1138) 2012-07-03 15:29:02.455:WARN:oejuc.AbstractLifeCycle:FAILED org.eclipse.jetty.server.Server@66da9ea4: java.net.SocketException: Permission denied java.net.SocketException: Permission denied

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• cannot get upstart to run user job

  - by dre

  I am trying to get upstart start a user job during the boot of my machine. I have my conky.conf upstart config file in my $HOME/.init directory. Wenn I run "start conky" I get this error: dre@dre-laptop:~$ start conky start: Rejected send message, 1 matched rules; type="method_call", sender=":1.76" (uid=1000 pid=2843 comm="start conky ") interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init") dre@dre-laptop:~$ I (think I) know that this error has to do with the d-bus system (authentification). I also read (http://upstart.ubuntu.com/cookbook/#id96) that ubuntu 12.10 already has the right configuration in the d-bus config file "/etc/dbus-1/system.d/Upstart.conf" to allow normal users to use upstart. dre@dre-laptop:~/.init$ cat conky.conf description "conky, a system monitor appled" start on lightdm stop on shutdown # Automatically restart process if crashed respawn # Essentially lets upstart know the process will detach itself to the background #expect fork # Start conky exec /usr/bin/conky So, who knows, what do I do wrong??? greetings Andre No one??? Please... give me your best shot.

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• Installation experiences with NDepend under Win7/64 with restricted user permissions

  - by Marko Apfel

  Today Patrick gives me a new license for his static code analysis tool NDepend for my fresh machine with Win7/64. This platform is new for me, so some things are different to Win XP. Maybe that till yet some of these things are not well enough understandanded from me. So i stepped in some traps. Here are my notes to get NDepend running. Download of NDepend Professional Edition from http://www.ndepend.com/NDependDownload.aspx   Extracted to c:\program files (x86)\NDepend   Started NDepend.Install.VisualStudioAddin.exe this failed with Okay – sounds plausible.   Copy NDependProLicense.xml to this folder   Next try with NDepend.Install.VisualStudioAddin.exe opens the integration dialog   Registering in Visual Studio failed with   Manually unblock as described (first solution hint)   and here comes my largest understanding problem. After unblocking this file   and closing this dialog the next opening shows the blocking again: Why? So the same error during integration pops up.   Okay – tried the second solution hint with copying folders Copy all to a full accessable folder under c:\temp\   Now the installation works   looks good   copying the folders back to c:\program files (x86)\NDepend   starting Visual Studio failed with     Okay – copying the folder to a private application folder c:\users\apf\My Applications\NDepend   Installing again   Now Visual Studio runs and NDepend is integrated Nevertheless my machine is only used by me, i prefer “all user”-installations. The described way works sadly only for my account.

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• Rotate canvas along its center based on user touch - Android

  - by Ganapathy

  I want to rotate the canvas circularly on its center axis based on user touch. i want to rotate based on center but its rotating based on top left corner . so i am able to see only 1/4 for rotation of image. any idea.. Like a old phone dialer . I have tried like as follows onDraw(Canvas canvas){ canvas.save(); // do my rotation canvas.rotate(rotation,0,0); canvas.drawBitmap( ((BitmapDrawable)d).getBitmap(),0,0,p ); canvas.restore(); } @Override public boolean onTouchEvent(MotionEvent e) { float x = e.getX(); float y = e.getY(); updateRotation(x,y); mPreviousX = x; mPreviousY = y; invalidate(); } private void updateRotation(float x, float y) { double r = Math.atan2(x - centerX, centerY - y); rotation = (int) Math.toDegrees(r); }

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• Oracle Launches Mobile Applications User Experience Design Patterns

  - by ultan o'broin

  OK, you heard Joe Huang (@JoeHuang_Oracle) Product Manager for Oracle Application Development Framework (ADF) Mobile. If you're an ADF developer, or a Java (yeah, Java in iOS) developer, well now you're a mobile developer as well. And, using the newly launched Applications User Experience (UX) team's Mobile UX Design Patterns, you're a UX developer rockstar too, offering users so much more than just cool functionality. Mobile Design Pattern for Inline Actions Mobile design requires a different way of thinking. Use Oracle’s mobile design patterns to design iPhone, Android, or browser-based smartphone apps. Oracle's sharing these cutting edge mobile design patterns and their baked-in, scientifically proven usability to enable Oracle customers and partners to build mobile apps quickly. The design patterns are common solutions that developers can easily apply across all application suites. Crafted by the UX team's insight into Oracle Fusion Middleware, the patterns are designed to work with the mobile technology provided by the Oracle Application Development Framework. Other great UX-related information on using ADF Mobile to design task flows and the development experience on offer are on the ADF EMG podcast series. Check out FXAer Brian 'Bex' Huff (@bex of Bezzotech talking about ADF Mobile in podcast number 6 and also number 8 which has great tips about getting going with Android and iOS mobile app development too.

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• "Viral" license that only blocks legal actions of user and developer against each other

  - by Lukasz Zaroda

  I was thinking a lot about software licensing lately, because I would like to do some coding. I'm not an expert in all those licenses, so I came up with my own idea, and before I will put in on paper, I would like to make sure that I didn't reinvent a wheel, so maybe I would be able to use something that exists. Main idea behind my license is to guarantee freedom of use the software, but not "freedom to" (positive) (e.g. freedom to having source code), but "freedom from" (negative) (strictly from legal actions against you). It would be "viral" copyleft license. You would be able to without fear do everything you want with the software (and binaries e.g. reverse engineering), as long as You will include information about author and/or authors, and all derivative works will be distributed with the same license. I'm not interested in anything that would restrict a freedom of company to do something like "tivoization". I'm just trying to accomplish something that would block any legal actions of user and developer, targeted against each other, with the exception of basic attribution. Does exist something like that?

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• SEO for maps-based websites that require user interaction

  - by j0nes

  I have a website that basically shows a lot of locations worldwide on a Google Maps like interface. The map itself is built using the Leaflet library and Open Street Map tiles. In the map, I show markers at each location I have. There is a popup window when I click on a marker that shows additional information and contains links to "detail" pages for this location. I fetch the location data for the viewpoint from an AJAX call from my server, so the additional information is not available in the HTML page itself. The detail pages are the pages my users are interested in. My normal users load the map, search the location they are interested in, click on a marker and click on a link in the popup window. However for search engines, this might look different. As this navigation pattern relies on user interaction, I think they might not be able to find the details page. My questions: Are search engines able to follow a navigation path like outlined above? How can I improve the navigation for search engines? (For example showing textual links below the map, sitemaps...) How important are internal links for SEO?

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• Implementing a switch statement based on user input

  - by Dave Voyles

  I'm trying to delay the time it takes for the main menu screen to pop up after a user has won / lost a match. As it stands, the game immediately displays a message stating "you won / lost" and waits for 6 seconds before loading the menu screen. I would also like players to have the ability to press a key to advance to the menu screen immediately but thus far my switch statement doesn't seem to do the trick. I've included the switch statement, along with my (theoretical) inputs. What could I be doing wrong here? if (gamestate == GameStates.End) switch (input.IsMenuDown(ControllingPlayer)) { case true: ScreenManager.AddScreen(new MainMenuScreen(), null); // Draws the MainMenuScreen break; case false: if (screenLoadDelay > 0) { screenLoadDelay -= gameTime.ElapsedGameTime.TotalSeconds; } ScreenManager.AddScreen(new MainMenuScreen(), null); // Draws the MainMenuScreen break; } /// <summary> /// Checks for a "menu down" input action. /// The controllingPlayer parameter specifies which player to read /// input for. If this is null, it will accept input from any player. /// </summary> public bool IsMenuDown(PlayerIndex? controllingPlayer) { PlayerIndex playerIndex; return IsNewKeyPress(Keys.Down, controllingPlayer, out playerIndex) || IsNewButtonPress(Buttons.DPadDown, controllingPlayer, out playerIndex) || IsNewButtonPress(Buttons.LeftThumbstickDown, controllingPlayer, out playerIndex); }

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• Oracle Worldwide Product Translation Group and Applications User Experience Working Together

  - by ultan o'broin

  The Applications User Experience (UX) Mobile team has been extending its ethnographic research to even more countries. Recently, the team conducted research in Sweden, and I am pleased to say I made the connection for the UX team with the Oracle's Worldwide Translation Product Group (WPTG) local (that is, in-country) language specialists. It struck me that WPTG's local market knowledge and insight that we heard about at an Oracle Usability Advisory Board meeting in the UK in 2011 would be very valuable to the UX efforts while, at the same time, UX could afford WPTG an opportunity to understand our design and development direction so that linguistic resources (terminology, style guides, translatability guidelines, and so on) for any translation of our mobile solutions could be prepared in advance. Brent White of the Mobile UX team takes notes as ethnography participant Capri Norman uses mobile technology to work in Stockholm. Pic credit: Oracle Applications UX. The UX team acknowledges Capri's kind permission to use this image. I'm told by Brent White of the Mobile UX team that the co-operation was a big success.  A WPTG Swedish language specialist joined a couple of ethnographic sessions, taking great notes and turning them around very fast for the UX team. And of course, a great local insight into Swedish culture and ways of working was provided too, along with some nice socializing!  More research in more countries is planned. Watch out for future blog posts and other communications about this great co-operation worldwide.

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• User Switching in XFCE 12.04 with LightDM and dumping unneeccesary Gnome libs

  - by user111120

  I'm an elder non-techie Mac-to-Linux convert trying to play the linux tech game by ear, so please be gentle! :) I am running XFCE Ubuntu 12.04 totally on a 8-gig flash drive and it's fantastic. I am starting to run into potential space issues (down to 1.0 gig free from 1.9 gigs since being installed last summer), most likely because of growing Thunderbird mail files, and this prompted my question. I just installed lightDM on my system because I want the ability to switch users in XFCE if I follow instructions on another blog. They advised using LightDM instead of GDM because LightDM doesn't download Gnome libraries. That's great since I need the space, but my question is how can I tell whether I don't already have Gnome libraries installed from other updates and such? And can I minimize having any Gnome libraries? The method for me to switch users entails creating a "fast-user-switch" file in /usr/local/bin; is there any easier way? One last thing so I din't have topen another needless thread; while experimenting I somehow lost the share folder in one of my accounts. Is there any way to get a share folder back? Thanks for any tips! Jim in NYC

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• Looking to create website that can have custom GUI and database per user

  - by riley3131

  I have developed an MS Access database for a company to track data in regards to production of a certain commodity. It has many many tables, forms, reports, etc. These were all done as the user requested, and resemble the users previously used system, mostly printed worksheets and excel workbooks. This has created a central location for all information and has allowed the company to compare data in a new way. I am now looking to do this for other companies, but would like to switch it to a web application. Here is my question. What is the best way to create unique solutions for individual companies that can have around 100 users each? I would love to create one site that would serve all parties, but that would ruin the customizable nature of what I am developing. I love the ability to create reports, excel sheets, pdf, graphs, etc with access, but am tired of relying on my customers software, servers, etc. I have some experience with WAMP, but I am far better at VBA. I was okay at PHP, and was getting a grasp on JavaScript a few years back. I am also trying to decide whether to go with WAMP or LAMP, if web is the best choice. Also, should I try set up one site for all users that after log-in goes to company specific pages, or individual sites for each company? Should I host or use a service?

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• Session lost and application end, after file download

  - by Amr ElGarhy

  I have this code in the end of link button click: Response.ContentType = "application/zip"; Response.AppendHeader("content-disposition", "attachment; filename=download.zip"); Response.TransmitFile(Server.MapPath("download.zip")); Response.End(); to download a zip file from an aspx page. In the previous page i set a session variable, after going to this download page and download the file, then press back i find the session=null "this happen after downloading more than 1 time", and the application_end in global.ascx called. Do you know why this may happen??

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• Flex secret for session using Facebook API

  - by Mike

  In this video, it mentioned not to embed the Facebook secret key inside the application, http://www.adobe.com/devnet/facebook/articles/video_facebook_quick_start.html, so I passed null to this function facebookSession = new FacebookSessionUtil(MYAPI, null, stage.loaderInfo); but it didn't work. How can I hide my secret key? In the doc it mentioned: http://facebook-actionscript-api.googlecode.com/svn/release/current/docs/com/facebook/utils/FacebookSessionUtil.html secret:String — Your application's secret key. If this parameter is passed a value of null, the constructor looks for a special session secret stored in the fb_sig_ss property of the loaderInfo object. For web sessions, even if you pass a non-null value for this parameter, the constructor will always look for a session secret and use that instead of the value that you pass for this parameter.

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• DAL, Session, Cache architecture

  - by subt13

  I'm attempting to create Data Access Layer for my web application. Currently, all datatables are stored in the session. When I am finished the DAL will populate and return datatables. Is it a good idea to store the returned datatables in the session? A distributed/shared cache? Or just ping the database each time? Note: generally the number of rows in the datatable will be small < 2000. Thanks

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• Symfony2: automatically logging in users from their Windows session

  - by Paul Maclean

  In Symfony2 I have built an intranet. It currently uses the FOSUserBundle and an LDAP bundle to log users in, and I would like to add the functionality to log in user from their session in Windows. I found an NTLM script for PHP and an updated version of it, but I haven't been able to incorporate them into Symfony2. I also found an NTLM bundle for Symfony2, but it was written for an older version of Symfony and it is not maintained anymore. I was unable to rewrite it and get it to work. My question is; how could I automatically log in users from their Windows session in my Symfony2-app, in addition to the already present LDAP functionality? What would be the best and easiest way?

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• Facebook Iframe App with multiple pages in Safari Session Variables not persisting

  - by Bathan

  I have a facebook Iframe application with multiple PHP pages in it. I have some links that point relatively to the files inside my "iframe folder". Having some issues with session variables inside the iframe. I set some session variables but they do not persist from one page to another. This does work on other browsers. I've been reading that Safari does not support Cross-Domain cookies and this might be the problem , but im not sure how to fix this. Any help?

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• Rails cookie session sharing and "www.example.com" or "example.com" problem

  - by Rafael Mueller

  When people access my app on www.example.com and log in, they get a cookie. I'm using the cookie option to store session on Rails. Accessing example.com (without the www), they must log in again, because Firefox does not recognize the previous session. So, what do you think is the best way to avoid this? I guess I will use a small .htaccess rule (Apache + Passenger) like this: RewriteEngine on RewriteCond %{HTTP_HOST} ^example\.com RewriteRule ^(.*)$ http://www.example.com/$1 [R=permanent,L] Do you guys think that is a good solution?

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• Michael Hartl's rails tutorial: reusing sessions resource for multiple User types

  - by ntaj

  I'm learning Ruby on Rails through Micheal Hartl's tutorial. In my web application, I require two types of Users, called publishers and subscribers. Currently I have a publishers resource and a subscribers resource. I'd like both of them to be able to use the sessions resource for signin/signout. I'm looking for some direction on how to implement this. Should my publisher and subscriber resource inherit from the User resource, so that, for example, the following code works through polymorphism? def create user = User.find_by_email(params[:session][:email]) if user && user.authenticate(params[:session][:password]) # Sign the user in and redirect to the user's show page. else # Create an error message and re-render the signin form. end end The publisher and subscriber do not have many common fields and different capabilities, so I think they should be modeled as two separate resources, but how to have them share the Sessions resource?

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• Quick question on session security.

  - by Scarface

  Hey guys, I was scanning my site for security and I noticed that it was possible for non users to send requests and post information, so I decided to put login checks on all information posts. I was wondering if it was a good way to keep a session id that is created by md5(uniqid()); in a session variable $_SESSION['id']=md5(uniqid()); for each user and then store that in a database under active users for that user. Then when a user tries to insert information, verify that their $_SESSION['id'] variable is equal to the one in the database where the username equals their $_SESSION['username']. What are your ideas on this guys? Thanks in advance!

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• Create a custom worksheet function in Excel VBA

  - by Tomalak

  I have a faint memory of being able to use VBA functions to calculate values in Excel, like this (as the cell formula): =MyCustomFunction(A3) Can this be done? EDIT: This is my VBA function signature: Public Function MyCustomFunction(str As String) As String The function sits in the ThisWorkbook module. If I try to use it in the worksheet as shown above, I get the #NAME? error. Solution (Thanks, codeape): The function is not accessible when it is defined ThisWorkbook module. It must be in a "proper" module, one that has been added manually to the workbook.

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• how to send classes defined in .proto (protocol-buffers) over a socket

  - by make

  Hi, I am trying to send a proto over a socket, but i am getting segmentation error. Could someone please help and tell me what is wrong with this example? file.proto message data{ required string x1 = 1; required uint32 x2 = 2; required float x3 = 3; } client.cpp ... // class defined in proto data data_snd; data data_rec; char *y1 = "operation1"; uint32_t y2 = 123 ; float y3 = 3.14; // assigning data to send() data_snd.set_x1(y1); data_snd.set_x2(y2); data_snd.set_x3(y3); //sending data to the server if (send(socket, &data_snd, sizeof(data_snd), 0) < 0) { cerr << "send() failed" ; exit(1); } //receiving data from the client if (recv(socket, &data_rec, sizeof(data_rec), 0) < 0) { cerr << "recv() failed"; exit(1); } //printing received data cout << data_rec.x1() << "\n"; cout << data_rec.x2() << "\n"; cout << data_rec.x3() << "\n"; ... server.cpp ... //receiving data from the client if (recv(socket, &data_rec, sizeof(data_rec), 0) < 0) { cerr << "recv() failed"; exit(1); } //printing received data cout << data_rec.x1() << "\n"; cout << data_rec.x2() << "\n"; cout << data_rec.x3() << "\n"; // assigning data to send() data_snd.set_x1(data_rec.x1()); data_snd.set_x2(data_rec.x2()); data_snd.set_x3(data_rec.x3()); //sending data to the server if (send(socket, &data_snd, sizeof(data_snd), 0) < 0) { cerr << "send() failed" ; exit(1); } ... Thanks for help and replies-

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• Session bug using facebook-connect-with-authlogic in Rails

  - by Jesse

  I'm trying to follow this article: http://ryanbigg.com/2010/03/testing-facebook, but I'm stuck. I think the problem is with my session, in that the current_usermethod comes up with nil for session[:facebook_session]. According to the original authlogic, it says to use the active_record_store for sessions: # config/environment.rb config.action_controller.session_store = :active_record_store # db/schema includes create_table "sessions", :force => true do |t| t.string "session_id", :null => false t.text "data" t.datetime "created_at" t.datetime "updated_at" end The article calls for the use of cookies. I'm confused; can I use cookies and the active record sessions? I'm also confused by the use of cattr_accessor :current_user from within the User model -- current_user still goes in the application controller, right? Please help.

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• Check if user exists in Active Directory

  - by K.R.

  Hello, I need to check if an user exists in AD and if so, retrieve some user information. I have been able to do this as shown below. But, it is very slow. Is there any way to do this faster? Thanks! using System; using System.DirectoryServices; using System.DirectoryServices.AccountManagement; namespace ConsoleApplication1 { class Program { static void Main() { Console.WriteLine("Enter AD account name..."); string strADLoginName = Console.ReadLine(); using(PrincipalContext context = new PrincipalContext(ContextType.Domain,"DEVMC")) { using (UserPrincipal user = UserPrincipal.FindByIdentity(context, strADLoginName)) { bool userExists = (user != null); if (userExists) { Console.WriteLine("User exists"); Console.WriteLine(user.EmailAddress); } else { Console.WriteLine("User doesn't exist"); } } } Console.ReadKey(); } } }

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• Best way for allowing subdomain session cookies using Tomcat

  - by Andrew Ingram

  By default tomcat will create a session cookie for the current domain. If you are on www.example.com, your cookie will be created for www.example.com (will only work on www.example.com). Whereas for example.com it will be created for .example.com (desired behaviour, will work on any subdomain of example.com as well as example.com itself). I've seen a few Tomcat valves which seem to intercept the creation of session cookies and create a replacement cookie with the correct .example.com domain, however none of them seem to work flawlessly and they all appear to leave the existing cookie and just create a new one. This means that two JSESSIONID cookies are being sent with each request. I was wondering if anybody has a definitive solution to this problem.

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• Upgrading to IIS7 stopped Firefox from receiving cookies?

  - by Ted Spence

  Our website has been using IIS6 for a long time. We test on IE8, Firefox, and Chrome. All browsers worked fine. We recently did an upgrade to IIS7, and Chrome and IE8 continue to work normally, but Firefox appears to be unable to get the ASP session cookie. As a result, when our code checks the Session[] object, we see nothing, we think the user has logged out, and the site resets your session. Does anyone know why upgrading to IIS7 would cause this behavior in Firefox? We've: 1) Reverted our application pool back to classic mode (no change); 2) Added a dummy value in the Global.asax object (no change); and 3) changed the web.config file from "authentication cookieless=autodetect" to "cookieless=usercookie" and back (no change).

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