Website built on: Rails 3.0.3 & Heroku
Installed: Exception Notifier & New Relic
I am rewriting this question since my previous attempt was unclear and subjective, hope this works better.
I have a website where users can perform calculations. Once in a while I get reports from the users through my (one way) communication media that “the website crashes and tells me I need to restart IE, but it still doesn’t work” which is pretty much as specific information I have been retrieving.
I get no timestamps so I can not look for it in the logs (Heroku only allows 2000 lines of error logs), I get no exception notifications and I cannot make the error appear myself so I would like your help with the following:
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What would make a website crash in the way that it would tell the user to restart the browser? I have never even heard of that! What should I look for in the logs, if I can get timestamps for the errors?
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Assuming it is a JavaScript-problem (which seems likely). How could I trouble shoot this issue? What tools can I use? Firebug does not give me any errors.
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Assuming it is a IE version thing. How can I test the application in a systematic manner? (without installing/reinstalling different versions). Is there any applications that can test an application for different browsers?
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It seems to work for most users/combinations. Do you have an older version of IE installed and can produce this error? Site: http://www.countcalculate.com (try any calculation).
The problem was (appearantly) limited to IE8 & XP-users. That combination conflicted with a bug in jQuery 1.6.2 according to http://bugs.jquery.com/ticket/9981.
Downgrading to 1.6.1 solved the problem.