if you hold down Alt while you hit print-screen, it will just copy the active window.
I think I would have to agree with Amused and Bigsmooth - about the AV/spyware/trojan, anyway (no excuse for not having a firewall) ... but I've been having some odd network activity lately...
Of course, having used several AV/AT applications so far, I still haven't found anything:
AVG, F-Secure AV, Kapersky AV, Avast AV, Aadaware SE, Spybot s&d, zero spyware, pest patrol, spysweeper, hijack this, tds-3
Assuming that I do have some sort of malicious code on my computer, it appears unlikely that having had AV software installed prior to said code's arrival would have been very effective.
17 processes, btw .. opera is using 45MB - I have seen it use as much as 120+, but that's because I let it cache as much to RAM as it wants.