Lots of Bonjour Service errors 100 in my windows 7 log file

Hi there!

I have two windows 7 PC's, and both of them have a *lot* of errors 100 in the log files.

Most of them look like "Warning: Removed port mapping request 0101497C Prot 2 Int 9970 TTL 7200 duplicates existing port mapping request 0068EADC Prot 2 Int 9970 TTL 7200", where the 7200 sometimes is a 0.

Tried to open port 5353 in my Norton Internet Security, but after downloading BonjourPSsetup.exe and running it and rebooting, the problem persists.

I use Bonjour for ServeToMe, to stream to my iPad 1.

How come there are so many errors and how do I fix them and prevent them happening again?

Kind regards,

Eelco