I am hating this "feature". Any new window that appears, does so behind the window in focus. Sometimes this causes problems, especially involving save or open dialogs and installation dialog windows. Sometimes the application that launches the dialog is stuck in focus, and I can't even get to the dialog (you know, it does that flashing thing when you click on the minimize button), causing me to have to open task manager to end the task or change windows focus.
Even worse, it happened while I was installing office 2007: it was doing the usual things during installation, the first being that it unpacks files to a temp directory, then starts the installation dialog. Well, I was waiting and waiting for that dialog, and everything had become unresponsive, so I did the ctrl-alt-del to launch task manager and see what was going on, and only then did the UAC prompt asking to confirm changes to the computer appear (with the screen darkening and everything). This window focus behavior is driving me crazy... does anyone know how to change any settings for it?