I've solved the problem as far as I'm concerned. I just disabled smooth
scrolling in Edit > Preferences > Advanced > General > Browsing. I think
Konqueror and Epiphany worked fine for me because they don't have smooth
scrolling.
--
slow scroll with image in the background
https://bugs.launchpad.n
It seems I was mistaken...
That third link, the oakparkfoundation one, goes slow whether you enable
or disable smooth scrolling (actually it seems to run better with it
on!). However it works fine in Konqueror.
Just out of curiosity I booted up the xp virtual machine (using VMWare)
and installed
