At one point I'd downloaded the Dolphin browser, and then uninstalled it. I was going to try it again, but when I went to the market, it said it was already installed. When I went to Manage Applications to uninstall it again, it wasn't in the list.

I've been messing around with the contents of my SD card, and I wonder if I did something to get this app into some strange state. Anybody have any suggestions?