Do not install this package unless you are using DRI with a Radeon card and are experiencing hangs. It is a fix, but not a perfect one. Some cards (especially of the Mobility type) have no problems without this patch but do if it is installed. Most ATI cards work with the vanilla driver. For more information on the issue involved, please see the freedesktop.org discussion here: http://lists.freedesktop.org/archives/xorg/2005-December/011679.html Hopefully after Slackware 11.0 when we move to the modular X11 release the need for this alternate package will be a thing of the past. Meanwhile, it is hoped that this might be helpful to someone out there. To install, just use installpkg. To remove, first use removepkg, and then reinstall the base X11 package.