I’m having a very annoying issue with Cubase 6 ( 6.03 - 32bit) on Windows 7. Every few times I press stop on playback, I get the spinning blue wheel and for about 20-30 seconds i can’t do anything. This is a very annoying problem as it makes working (especially when editing drums) ALOT slower and more annoying. Anyone know what may be causing this issue? Its driving me crazy!
Thanks 
Maybe the auto-save feature? I’ve got a feeling it waits for at least recordings to stop before it performs a save. 20-30 seconds sounds like a lot though unless you have a really massive project.
Yep that looks like auto save to me
Try turning it off and see if the problem goes away.
Hippo
Have a look in your “Pool” and see if there are any stray samples from another Project in there.
I get this if I’ve been lazy and just erased all tracks in a project just to get a new song started quickly but with the same page layout for use for the same “band”.