I can reproduce this bug with Eclipse and Aptana (and probably with Last.fm).
I have an Eclipse installed with Aptana and the latter wants to download some MBs of update. At 21% it stops as Last.fm also does.
Closing Eclipse and Last.fm the CPU usage caused by ksoftirqd/1 decreases to 0-1%.
I can reproduce this bug with Eclipse and Aptana (and probably with Last.fm).
I have an Eclipse installed with Aptana and the latter wants to download some MBs of update. At 21% it stops as Last.fm also does.
Closing Eclipse and Last.fm the CPU usage caused by ksoftirqd/1 decreases to 0-1%.