Comment 33 for bug 391461

I can confirm this as well. Just updated and rebooted.

Interesting tidbits from kern.log:

Sep 10 18:12:53 Phoenix kernel: [ 5.867229] nvidia: module license 'NVIDIA' taints kernel.
Sep 10 18:12:53 Phoenix kernel: [ 5.867235] Disabling lock debugging due to kernel taint
Sep 10 18:12:53 Phoenix kernel: [ 5.876511] dcdbas dcdbas: Dell Systems Management Base Driver (version 5.6.0-3.2)
Sep 10 18:12:53 Phoenix kernel: [ 5.877300] intel_rng: FWH not detected
Sep 10 18:12:53 Phoenix kernel: [ 6.126223] nvidia 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Sep 10 18:12:53 Phoenix kernel: [ 6.126232] nvidia 0000:01:00.0: setting latency timer to 64
Sep 10 18:12:53 Phoenix kernel: [ 6.126383] NVRM: loading NVIDIA UNIX x86 Kernel Module 185.18.36 Fri Aug 14 17:18:04 PDT 2009
Sep 10 18:12:53 Phoenix kernel: [ 6.126456] NVRM: CPU does not support the PAT, falling back to MTRRs.

This is from /var/log/Xorg.0.log

(II) LoadModule: "glx"
(II) Loading /usr/lib/xorg/modules/extensions//libglx.so
dlopen: /usr/lib/xorg/modules/extensions//libglx.so: undefined symbol: _nv000028gl
(EE) Failed to load /usr/lib/xorg/modules/extensions//libglx.so
(II) UnloadModule: "glx"
(EE) Failed to load module "glx" (loader failed, 7)

I have also attached a copy of my nvidia bug report log

I am by no means an expert, but part of the problem seems to be that the GLX Module is not being loaded. I hope that this info helps resolve the problem.