Comment 49 for bug 254668

@vnieto
Your nvidia module from the previous kernel, 2.6.27-2 (found in updates/dkms/) can be copied to the same folder in 2.6.27-3 (smb5).

Since there is now a 2.6.27-3 is now in the repository (based on rc6), you may just want to "apt-get --reinstall install linux-image-2.6.27-3-generic" .. That should run dkms for you and update the nvidia module.