Hi Pedro,
I just had the same problem with the disappearing windows on a new installation of Ubuntu 7.10
I was able to resolve the problem by disabling and then re-enabling the restricted drivers for Nvidia.
After rebooting, the window borders were back.
The problem appeared after I changed the display resolution, but setting the it back to the original resolution didn't bring back the window borders.
Hi Pedro,
I just had the same problem with the disappearing windows on a new installation of Ubuntu 7.10
I was able to resolve the problem by disabling and then re-enabling the restricted drivers for Nvidia.
After rebooting, the window borders were back.
The problem appeared after I changed the display resolution, but setting the it back to the original resolution didn't bring back the window borders.