As i have told earlier, i have problems using aperture in full screen.
Here a movie showing some of the problems. Beside of that i still - occasionally - get the grey brushed alu background when going full screen instead of aperture photos.
[play movie]
What you see in the movie:
When the mouse goes left in fullscreen view, the screen slides sideways instead of just showing the vertical view of thumbs (film strip) in left side of the full screen.
To go back, i press alt-rightarrow.
Second failure, when mouse goes to the top of the screen, instead of showing the aperture top menu/adjustments, the osx top menu line slides on top of the aperture menu, so often i cannot use the top menu in full screen.
Both failures is NOT systematic, but the failures comes and goes. If the failure is present, i often can remove the failure by leaving full screen, then starting full screen again, not always, but often.
Just to let you know if you eventually talks to the apple-guys.