Found what probebly cause the scanning of lots of programs when starting things.
This (as mentioned above) only happends when I start things from IntelliType keys.
It seems like IntelliType keeps a list of programs recently started on the computer.
This list is exacly the programs avast! scans when I use an IntellType keys to start something.
But why this has started to happend now I don’t have a clue. And not how to avoid it.