Windsor, Ontario, Canada
My mother had something similar happen to her when she visited her Webshots not too long ago.... It seems that one of the advertisers on the site installed a popup on the page she was in that wouldn't close, not even from the task bar, and when she clicked the little "x" on the upper right of the box, it downloaded something to her cookies and informed her with another popup that abetterinternet.com would automatically (without her permission) update her browser with their software as they saw fit and when they saw fit. This incidious little program eventually caused her entire computer to crash to the point that it wouldn't load Windows. Luckily, my husband is a bit of a techi... he managed to save most of her files but she lost over 200 addresses (her entire address book) because he couldn't locate it and save it to her untouched partition before doing a complete reformat and reinstall. (this happenned when she was still looking for a job and couldn't afford to be without a computer) She has since taken Webshots software off her computer and refuses to go to the site (it's full of spyware anyway and she doesn't needher privacy invaded like that)
Reb, nasty little trojans like the one that hit you aren't sent by known enemies, and unless you have an up-to-date firewall and virus protection on your computer, they can sneak in just by pinging an open port. It's sad that there are people out there that use their programming talents for such malicious purposes. Unfortunately, that's the world we live in. If you want to see if you have spyware or sneaky little programs embedded in your software that produce popups when you type certain words or go to certain sites, get the program Adaware.... it's freeware and very useful of clearing your computer registry of these little nasties.
Cherish the good memories of the past and look forward to the adventure called Tomorrow. But above all... be kind to yourself today.