I pulled this from the Symantec Platinum site. I'm not sure if it applies, but here ya go.

Situation: You see a Norton Internet Security (NIS) or Norton Personal Firewall (NPF) alert indicating that C:\Windows\System\krnl386.exe is attempting to access the Internet.


Solution: To fix this problem, you need to permit the connection so an IP address can be assigned.

Follow these steps:
1. Select Permit when the NIS or NPF alert dialog box appears.
2. Click OK.
Cheers: