After instal Spybot 2.4 the systemscan freezed.
No updates are possible because the is no internet connection.
Spybot had changed my network settings without any warnings.

Result:
unable to surf on internet
virusscanner and internet security was unable to download updates
even after repair internet settings
unable to kill spybot process

decided to uninstall....
result:
unable to surf on internet
virusscanner and internet security was unable to download updates

result:
complete system restore

result:
no spybot anymore... ever.....