Caller ID was 21-322-6783. 9:58am 4/14/12.
It was an auto-dialer, because when I answered I heard ringing and then he picked up. It was a man with an indistinguishable accent who asked for me by name (no surprise, I'm listed) and said he was calling because I've been having errors and pop-ups. I knew immediately it was a scam because I maintain my protection suite rigorously and have had no recent problems. I politely told him he's calling the wrong person because I'm a computer technician (half-truth... I'm a software support specialist), no thank you to his offer, and please don't call this number again. He told me to F* OFF as he was hanging up on me.

I have been on the National Do Not Call Registry for years. Got another call 2 minutes later from a blocked caller but there was nobody on the other end. Not sure if that was related.

I've posted this info on other caller ID numbers similar to the one that called me, so I'm sorry if it looks like I'm spamming this site with my comments. I just want to make this scam visible to as many people as possible!!