Yesterday I updated my Ubuntu from Edgy to Feisty, just one day after doing it from Dapper Drake, and that because on Edgy my Intel Pro/Wireless stop working, but now with Feisty seems to be working again, anyway my VMware Server stop working and the vmware-config.pl did not success to compile the module for my Kernel 2.6.20-12-generic.

so I applied the same steps I did for my Debian Etch configuration, and it worked, here is the how to.

Installing VMware Server on Debian Etch