OpenGL warnings with Ubuntu 12.04 LTS running as a VirtualBox Guest under Windows7

Solution 1:

The video drivers on the Guest Additions package are merely a proxy between the guest OS and the host video drivers (with some limitations, like 16 (modifiable) MB of VRAM). This means the same errors might pop even if the OS would run with updated NVidia Drivers (you can use the proprietary drivers -- to install them just execute the .run file from a shell) or, maybe, only WITHOUT the updated drivers.

It is possible that Windows 7 doesn't include (At least I guess it doesn't) the real NVidia Drivers, but at most compatible but less powerful ones (like those originally found on Ubuntu). If so, you have to update the HOST drivers from HERE!