Somehow my firewall keeps getting turned off in OneCare & it won’t let me turn it back on. Also when I go into OneCare and ask it to fix it itself it fails.
Try the Firewall repair tool - http://social.microsoft.com/forums/en-US/onecarefirewall/thread/e67b1989-afd5-47e5-a393-3a551c7c7e60/
If that fails to resolve it, please contact support:
How to reach support (FAQ) - http://social.microsoft.com/Forums/en-US/onecareinstallandactivate/thread/30400b52-7f26-4ba0-bc18-17e305329d90
-steve