2009/10/13 Fons Adriaensen <fons@kokkinizita.net>
There's only only problem I've not been able to fix:
when using apps that frequently update pixmaps or
send Ximages, the mouse pointer gets corrupted with
that data. It happens with Ardour, jkmeter, japa,
and others. No idea where to start... Driver is
the 'ati' module, probably it needs some parameters.
 
Is this xf86-video-ati? What card is this? In case you missed it: http://wiki.archlinux.org/index.php/ATI#There_are_2_different_open-source_ATI_drivers.2C_xf86-video-ati_and_xf86-video-radeonhd.

Sounds like a bug to me..especially since KMS is enabled by default.

http://wiki.archlinux.org/index.php/ATI#AMD.2FAti_cards_and_KernelModeSetting_.28KMS.29