IB, Xcode 3.2, Leopard

[Bill]

Since upgrading to Xcode 3.2 on Snow Leopard, a minor synchronization
issue between Interface Builder and Xcode has become majorly
annoying. When I first started playing with iPhone development, I was
impressed with their synchronization - IB immediately knew if you made
changes to files in Xcode and vice versa. After the upgrade, though,
Xcode never prompts you to save any changes made from IB. Before, if
you made changes to the .xib in IB, and then you simply hit 'build &
run' in Xcode, the save reminder that popped up would include
the .xib, but not so after the upgrade. You have to manually select
save from IB.

Anyone else notice this? Did I miss some minor setting?

Thanks,

Bill