For those using McAfee products (Security Center - AV, Personal Firewall, etc.), be careful with installing the new upgrade. It basically screwed up my access to Port 110 (for POP3). I tried disabling the Email Virus check option in the Virus Scan product, but no go, I had to restore my system to yesterday's image to get my POP3 clients to work again.
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Buh Bye!

Cheers,
Me