@JPB,
my account posted a spammy message on my friends' walls, rapid-fire style.
i was on as it was happening, so i reset my password, logged out and then back in, and then deleted the messages from my profile page.
the same thing happened to one of my friends a few days ago, so it's possible i got 'infected' from that.
if that's the case, i in turn have prolly 'infected' all my friends...
R(sorry)P