Since the update....
I must have iTunes open before launching frontrow with the remote, otherwise when i click music I just get a loading symbol forever next to the music and eventually have to cmmd+opt+esc to exit frontrow. If I open itunes before starting frontrow I have no problems accessing music.
I think this is a since the update kind of thing. I have only had the computer for a few days and haven't used front row very much so the problem may have persisted before the update. But either way this is still a problem!!
BTW - MBP C2D 2.33 2 GIG RAM
I have a computer just like that, also brand new. (Actually, probably the same model you have). iTunes starts automatically for me when I launch Front Row.
What could be different? (It did take about 10-20 seconds for it to show my list of music, but it didn't crash or anything.)