Earlier today I received both the Nvidia update from 177.68 to 177.70 and the kernel update from 2.6.26-5 to 2.6.27-2. Upon restarting the system I found that the Nvidia driver 177.70 had been built for kernel 2.6.26-5 not 2.6.27-2. Reinstalling nvidia-graphics-drivers-177 solved the problem.
Earlier today I received both the Nvidia update from 177.68 to 177.70 and the kernel update from 2.6.26-5 to 2.6.27-2. Upon restarting the system I found that the Nvidia driver 177.70 had been built for kernel 2.6.26-5 not 2.6.27-2. Reinstalling nvidia- graphics- drivers- 177 solved the problem.