Nothing, and yet in Recent Items, it says Finder.
I'm going to say it was the 10.4.11 update. When I did mine through software update Safari would crash as soon as I clicked on the icon and the Searchlight search box wouldn't stay open for me to type anything into it. I think you're going to have to do a full reinstall. If/when you do, don't grab the update from the toolbar. Go to the Apple site and download the Combo Intel update. It's worked like a charm so far.