Yes, google search page opened up.

This time:

http://www.epoclick.com/?ad=1287622455 came up in a separate window when I unblocked the pop-up after opening this page.

What may have begun as a trojan was further complicated by the tech support walking me through resetting all my pop-up blockers, deleting cookies, etc. so it's not absolutely true that nothing at all changed. However, at the moment this thread seems to bring out the problem EVERY time.