I was up and running on the 2.6.22.9-9 version on a Thinkpad R61 - Nvidia NVS 140m.
With 2.6.23 installed via yum,
I get "Error inserting nvidia_100_14_19 (/lib/modules/2.6.23.1-21.fc7/updates/drivers/video/nvidia/nvidia-100_14_19.ko):
Invalid module format" at startx
Any ideas?
Les
Note: also posted to atrpms