Messenger preparing to access Internet for the first time

[Luper]

PS - I blocked internet access to the messenger only AFTER having the
problem.

Luper

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I have Norton 2003 installed. In the log viewer for the firewall I get
the following message: "An instance of "C:\Program
Files\Messenger\msmsgs.exe" is preparing to access the Internet for
the first time".

I get this message every two minutes!

What is causing this? Is this a security treat?

For the moment, I blocked internet access to the messenger.

Tks.

Luper