Installed Ubuntu 10.04 LTS and then upgraded to 12.04 LTS and then installed the nvidia drivers (stable) and then ran Ubuntu Software Center to install Qt Creator causing system to become unresponsive and screen to start flickering. Looks like I'm going to have to reboot. Has anyone experienced a similar issue? Not sure if this is related to the following issue -
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187
