Hi fr33tux,
I followed your advice and started that AdwCleaner, which I downloaded from your link.
But before starting the program I had to Switch off my Anti-Virus-Program (Avast Premier), because it detected possible dangerous activities and deleted the *.exe file.
After skipping the Virus scanner AdwCleaner scanned the Computer and found one PUP.
To delete this a newstart was required, which was performed successfully.
Another scan showed that the Computer was clean and the PUP was deleted.
As the program run conditions are nit identical from my first posting and this test,
It is not clear wheather your Version of AdwCleaner has fixed the Problem or there was an interaction with the Anti-Virus-Program.
Thank you for your efforts,
With Kind Regards
Gerd
AdwCleaner_Debug.log