I've had XP set to open on my second display...pretty much forever. Now, though, after updating OSX to 10.5.7, it'll only open on the first display. I can't even drag it to the second display. Even if I try using expose and dragging it that way, it will drag to the second display in expose, but as soon as I exit expose it snaps back to the first display. I've checked my display settings in OSX, and nothing appears to be different. Any ideas? Thanks...
Problem solved. For some reason, Parallels decided to un-check "use multiple monitors" in the settings all on its own. Weird.
Actually, it turned out to be that Parallels had un-checked "Windows Taskbar: relocate automatically". Checking that option solved the problem.