Re: FX2800M - driver 260.19.44 - adaptive clocking not working
attached you find the requested nvidia-bug-report.log. Actually it does not tell much more than the kernel version.
Regarding gnome : I shall install it and provide some information soon.
Regarding your remarks about SBIOS:
What is an SBIOS in comparison to a normal BIOS ? The Bios on the Dell M6500 is Dell's latest namely version A06.