thats a good sign,
I agree with >If nothing is detected and you continue to receive the alerts, then remove all programs from the Program Control feature of Internet Worm protection. Read Creating new program rules in Norton AntiVirus Internet Worm Protection for detailed instructions.
I believe it is now an old warning and as you have not been able to produce a response to either permit or deny, deny is always good. Norton will continue to show this message.
I used to get these with Zone Alarm pro.
I believe you have genuinely cleaned your pc with all of the above suggestions.. sysclean is very thorough if you did this in safemode and renamed I cant see anything to worry about now. Please follow the suggestion to end that message as you provided.
Read Creating new program rules in Norton AntiVirus Internet Worm Protection for detailed instructions
Message: "Internet Worm Protection has detected a remote computer that is attempting to access the computer . . . "
Merete