Hi all. Firefox has been my favourite browser since V1. V3 had some crashing issues for a while, especially with Youtube, but these ceased after installing a flash-blocker. Versions 4 & 5 however performed so miserably that I almost considered switching to Chrome or Opera. Constantly hanging when clicking bookmarks (about 1 in every 10 clicks, then hanging for circa 20 seconds!) and general slowness loading pages. My solution was to completely uninstall Firefox, then re-install 3.6.18...instant improvement! The whole browsing experience is appreciably faster, and no hang-ups either. Hopefully when 5 is updated it will perform just as well as 3.6.18...but until I can be sure, I won't be updating. I'm interested in how many of you have used this solution? I for one am happy it's still possible to use V3 as otherwise I would have been jumping ship. By the way I'm XP SP3. Peace.