I'm quite new here, too, but tend to agree with the majority of the other posters. Nobody has to receive pm's, nobody has to open them. I did, and can definitely see why a lot of people were offended.But to bleat stridently to the admins about it? I respect the decision taken, but think that to disable pm's is a bit overkill. Like banning live coverage of the superbowl because of a "wardrobe malfunction".
Long term, I hope a technical solution such as mentioned by al968 5 posts back could be used. Also would like to see the spammers prosecuted or otherwise somehow penalised, if such a thing is legally and technically realistic.
We live in the age of junkmail. It's unpleasant, and annoying,and sometimes offensive, but...get over it. Site security wasn't compromised, and that's the main thing.