0
votes
1answer
189 views

Why does CPU usage remain at 100% after running Mathematica 9?

I have installed Ubuntu 13.04 and Mathematica 9 on a Sony Vaio VPCEA36FG. When I run a program in Mathematica, CPU usage rises to 100%. This is a normal. But when Mathematica finishes computation, ...
3
votes
2answers
514 views

12.04 runs my CPU up to 99%

12.04 runs my CPU up to 99% and then lags to the point of having to shut down the laptop to restart it manually.Why is my CPU running so high and what can I do to fix it?
3
votes
1answer
2k views

Why four tasks named kslowd eat CPU time?

I installed Unity on my Belinea o.book 13011. Now there are four Tasks named kslowd000 to kslowd003. Each task uses 10-15% CPU, expect there is another Task that needs more. So the CPU Fan is ...