What browser is sending user agent beginning mozilla/5.0+, tramslates & into &

Posted by Patrick on Pro Webmasters See other posts from Pro Webmasters or by Patrick
Published on 2010-08-13T14:43:42Z Indexed on 2011/06/26 0:30 UTC
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We've got a website which has been running for a few years now. One of our customers has just started having an intermittent problem. Looking at our iis6.0 logs the service works correctly when they have a user agent beginning "mozilla/4.0+" but fails when the user agent begins "mozilla/5.0+". The particular customer only started having this problem on Wednesday.

Does anyone know the browser/upgrade which changes the 4.0 to 5.0?

The actual problem caused is that an "&" in a url parameter list is being encoded as "&". Anyone seen anything similar?

We have other users sending from browsers with the 5.0+ user agent without trouble.

Sorry about the tags but don't have the rep to create new ones.

Thanks in advance, Patrick

Edit: hi Viper_sb,

It is most probably a custom script (I'm primarily a c++ developer so don't really understand). Our site services requests from other customer developed sites, this one was done in Java script as far as I know.

we're actually getting a variety of user agents (presumably depending on which of our customers customers is accessing the service), here's a few: Mozilla/5.0+(Windows;+U;+Windows+NT+6.1;+fr;+rv:

Mozilla/5.0+(Windows;+U;+Windows+NT+5.1;+en-US)+AppleWebKit/533.4+(KHTML,+like+Gecko)+Chrome/5.0.375.126+Safari/533.4 302 0 0

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