Strange problem on my iMac. iPhoto all of a sudden won't open. Everything else on the computer is working just fine. However, iPhoto prior to this has been sluggish performing up to the new problem (won't open) that just started. Also, when you right click on the iPhoto icon and get that small, pop-up screen at the icon, it shows two folders open with nothing open. Back when it was still working but sluggish, those two folders were there then as well. Any ideas what to try? Thanks for the help folks!