When haven ksysguard open for longer, some processes do no "go away", they stay in the list although the are long gone. Closing and reopening updates the list properly.

Reproducible: Always

Steps to Reproduce:
1. Create a script that runs a program multiple times (like let inkscape convert images in a batch script)
2. open ksysguard and let it open for ten minutes
3.

Actual Results:  
Multiple inkscape processes are shown with some cpu usage

Expected Results:  
Only one (or two) inkscape processes should be shown (or none, if the script is finished)

Right now I also have a kate process showing up in the list with 27k/s that is long gone really...