If it worked with 2.6.15.19 and it doesn't work with 2.6.15.2x then it is a shame not to fix it. There are various things that are affected such as various Linux games that need a newer libgl1-mesa as well as Xgl and Aiglx. -- Xorg [dri] i915 kernel module is 1.1 https://launchpad.net/bugs/38220