Today on IRC someone told me he had a problem with the event log window taking focus....in the end he was able to tell me when exactly it happend. I tried it out myself and can confirm it.
Steps to reproduce:
1. open event log screen
2. restart MSNM
Now you will see the event log window is on top of MSNM and it will go there continuously by itself
The only way to make it behave again as should is to go to tools and set "always on top", make eventlog window go behind MSNM screen and untick "always on top" again.