Comment 124 for bug 217580

It is most certainly not fixed in Karmic. Scrolling in Google Reader is even worse for me with 9.10 (x86_64) and FF 3.5. I've tried everything: disabling desktop effects, disabling pango, disabling all plugins (ubuntu extension, flash, etc.), deleting my firefox profile (so it creates a fresh one), switching gnome themes, etc. and nothing fixes the issue.

I don't have much of a problem in Gmail but Google Reader is just terrible. I can see the screen redrawing while I scroll. Using an NVIDIA GX8500 based card with proprietary drivers (I've tried several different versions). Video in the rest of the system seems to be fine and snappy.