Similar hangs here, but *not* using version control in PSD.

Page goes grey and Windows sometimes asks if want to kill or wait for it to complete.

We also occasionally lose icons and names in the left-hand panels e.g Files. We can still see the folder structure, but the item icon and file name is missing. This usually proceeds a crash from PSD that generates a support email and then it gets into a loop of crashing and emailing.