User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1) Gecko/20090624 FoxOnFlames Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1) Gecko/20090624 FoxOnFlames If general.useragent.extra.firefox is defined, even if the string is empty (''), Firefox will crash on http://www.art-meter.com/blog/cat/. Tested with a new (empty) Firefox profile and latest official 3.5 version. Reproducible: Always Steps to Reproduce: 1. In prefs.js set preference general.useragent.extra.firefox to any value 2. Start Firefox 3. Visit http://www.art-meter.com/blog/cat/ Actual Results: Firefox will crash. Expected Results: Should be no question is that case.
WFM. In addition to comment 1, could you please also post your Build ID (Help -> About Firefox, copy and paste the entire Build ID
Build ID was already posted, see above (Build Identifier) Here once more: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1) Gecko/20090624 FoxOnFlames You can always get the stack trace by following the 'Steps to Reproduce'.
As I said, I can't reproduce this so I can't get a stack trace. We need your stack trace before we can even attempt to do anything here since no one else can reproduce this.
I tried to get a crash report with an empty profile but I failed because the crash reporter was not invoked. To resolve the crash reporter issue I updated the Flash plugin von version 9 to 10 as recommended on https://developer.mozilla.org/en/How_to_get_a_stacktrace_for_a_bug_report. With the Flash update Bug 500878 was resolved too. Note that - although using en empty Firefox profile - the Flash plugin was still loaded into Firefox (from an Opera subdirectory).