Nvidia drivers, screen redraws

[Reid Rivenburgh]

The combination of Gnome and fvwm has been working well for me (though
it ain't easy to configure!).  I used kde for several years, though,
so I thought I'd check out the latest (F9, 4.1.1).  It definitely
seems better than the early 4.0 releases in terms of polish and
goodies, but one thing I noticed is that switching desktops is
relatively slow.  If it's a desktop with firefox on it, it'll take 3-4
seconds to redraw the firefox window.  With fvwm, it's less than a
second.  Turning off the nifty desktop effects helps some.  Now, I
also tried switching to the nvidia driver from livna at the same time,
so that could be a factor, though it is still fast with nvidia drivers
and fvwm.  I admit I haven't tried the combo of xorg driver and kde.
Seems like I've seen some web page glitchiness when scrolling, too.
Just curious if anyone has any comments on this behavior.  (At this
point, though, I'm happy to go back to fvwm/gnome, what with the
little issues and feeling like it'd be quite a bit of work to set
things up the way I like them.)

The computer is about six months old: core duo 8400, 4 GB memory,
GeForce 8600 GTS, 64-bit packages.

Thanks,
reid