you can't turn them off because they're not running anymore. That's a mistake from Combo fix thinking Avast 4 is still there, due to something that messed up during your upgrade to Avast 5 (ask me again why I tell everyone to uninstall V4 first and not upgrade directly
). There must be some files from V4 left behind...that's not your fault; Avast told people that they could upgrade directly, seems finally
really possible since 5.0.507...
Your way out is probably to uninstall Avast completely until you've solved your malware issues...