[jQuery] Re: slow and jerky slide on Firefox 2.0.0.13 (Ubuntu/ Core-2 : 1.8GHz)

[marr.adam]

Unless the transition is very bad, I don't think its your problem.
Even using mootools effects I've found FF's performance with animation
poor. Even surprisingly compared to IE, which tends to run the
animations quite smooth. This may just be due to how FF handles the
timer events, I'm not really sure. Hopefully FF3 will allow smoother
animation.