I haven't really noticed many problems with the firefox browser on Windows 7...and it's pretty much the only browser that I use. I've tried Chrome a few times...but the lack of add-on support is a killer for me. I just rely too much on my firefox add-ons to use other browsers.
3.5.2 ran so slow, allowed popups, crashed pages, ect so much I dropped it and transferred its bookmarks to my IE8, Chrome 3 beta, safari 4 and opera 10 beta installs. All run much better.
Mine hasnt been too bad but seems slower than Id like it.
I am trying some tips out from Speed Up Firefox web browser | Ubuntu Geek
Bunch of stuff you can tweak in the about:config
I've just changed (Happily) to FF. I've been slowed alot, thought it was all those addons, after reading this post I googled an answer, an found this:
Speed up Firefox with these tweaks , maybe it'll help, or give you some ideas, I'm just trying it out, will post back about success/failure.
I have been a happy FF user for about 4 years now and haven't noticed any of the issues in the previous posts. I tend to be a little bit conservative with my addons using only:
Bugmenot
betterprivacy
addblock plus
IE tab
if you experience pop-ups or an annoying pop-up blocker notification then your FF is not optimized as well as it can be. I experience NO, repeat NO, annoying popups and rarely a notification of blocked pop-ups. Recommend Highly the addblock plus....it works well.
Well, I'll be. This workaround that was just published on 8/22 seems to work:
How to fix Flash video performance in Firefox
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