I'm not sure of the cause or solution, so the article name is up in the air; but @ nsStyleSet::FileRules(int (*)(nsIStyleRuleProcessor*, void*), RuleProcessorData*) is a top crash. The crash bug is bug 492675.
Current guesses are it's related to the MyWebSearch Toolbar which is spyware and also called ASK toolbar or Zone alarm toolbar, see also bug 466024. But I asked for more QA so we'll be able to confirm that.
Notes for article: - the issue is under investigation - most likely caused by ask toolbar or mywebsearch
Draft is up, ready for review. I left all of the symbol craziness out of the URL for this one, add back what won't cause problems please.
Reviewed and moved KB at: Wed 19 of Aug, 2009 23:56 EST
special characters break tiki. https://support.mozilla.com/en-US/kb/Crash+signature+-+nsStyleSet+FileRules