Kworker, what is it and why is it hogging so much CPU?
http://askubuntu.com/questions/33640/kworker-what-is-it-and-why-is-it-hogging-so-much-favorite3IrecentlyupgradedtotheKubuntuNattyBeta1andI'vebeenhavingalotofissueswiththeprocesskworker.Atmomentsituses