My tabbed bookmarks work fine so far, and no Java issues either. lol the only negative I've found is it makes Drudge look horrible. Not that Drudge's site was all that sexy to begin with though lol.
ROFL! Part of my problem may be that I have an *ancient* (5 years old) computer and am running Windows '98.
I have yet to try Mozilla on my laptop which is newer and runs Windows Millenium.
It's possible there could be a performance issue with my PC.