Hmmm. That was not my experience. I am not using ubuntu though. I am using gentoo. I installed a stock 2.6.15 kernel and patched with Ingo's patch. Rebuilt the kernel installed the nvidia modules. Then I did a compile of the vmware modules via its configure script. It complained about a missing spinlock and died. Will try it again over the weekend with that in mind however. I havnt seen any instability in the system. It has not degraded my performance. However, I am not running the system as a server either. > I have installed VMW-Player two Weeks ago on UBUNTU dapper drake > preflight4 with active working rt-kernel - the VM-Modules built OK and > the Player works.