[ubuntu] Keyboard Disabled.

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http://ubuntuforums.org – Hello, After using other Linux Distros a couple of years ago, I decided to Dual Boot my Desktop and Laptop with Ubuntu and Windows 7. The installation went perfect and everything is installed. However I have one issue. Every now and then, when I execute an application that uses a considerable ammount of CPU, my keyboard is Disabled. I've tried reinserting the USB Keyboard and even inserting another Keyboard. I have this issue also on my Laptop that has the exact same Ubuntu Version on :( Ubuntu Version: Ubuntu 12.04.1 LTS Any help would be appreciated! (Hardware)