Mon 11 Feb 2008
Today I faced a strange bug caused by the interaction of the user-agent string of Firefox on ubuntu feisty and some paket filters. A site wouldn’t load with the error message above in Firefox, but it would load in Opera. Update of firefox package didn’t fix it.
Found this thread Connection Reset in Firefox but not other browsers and one proposed fix worked for me:
Open “about:config” , type useragent in filter and change setting “general.useragent.extra.firefoxComment” from (Ubuntu feisty) to (Ubuntu). The problem seems to be that substring “ist” is recognized as a malware signature by some paket filters.