So, I know Aperture had it's obligatory update just before Lion's release, but it now seems to still need a little patch up. In Full Screen (Something Aperture was already very good at) it looks like Aperture is getting confused between the keyboard shortcut, the toggle switch, and exit. And because of this it always feels like Aperture isn't stable in full screen. Scrolling in and revealing the image browser causes more hangs than before as Aperture's old UI tries to keep up with Lion's. We've been needing an Aperture 4/X since before Lion was just a cub, now it looks even more necessary. Maybe it's time.