Anyway, been using Firefox for about 4 years, never had a problem.Downloaded around 70 games from GOG using firefox built-in downloader, and NEVER had a problem.
That is strange.Were you using some plugins? or maybe it is a problem of your internet connection? I am using pure Firefox, latest version with only one plugin (adblock plus) and a skin called "littlefox". I have been using this config for a few years, never encountered a problem with browsing, downloading, crashing...nothing.It just works.And really fast too, firefox starts around half a second from cold boot on my pc.