Changes:
envy (0.9.2-0ubuntu6) unstable; urgency=low
.
* Changed: the ATI legacy is not compatible with Xorg 7.2 therefore Envy will throw an error
if a user tries to install this driver on a distribution other than Edgy
* Added: ATI driver 8.36.5
* Removed: ATI driver 8.35.5
* Added: Mesa is restored after the Nvidia driver is uninstalled
* Changed: depmod is now used for the Nvidia driver
* Added: a little trick to avoid troubles with the restricted drivers manager

Available Here