I have noticed also that maximizing the imported items window will often provoke a hang up but this was happening before the 6.3.3 update also.
I spoke to Dan from support and I think he fixed the problem. He said it has to do with the Adobe Reader. He uninstalled version 10 and installed version 9. I tried it out several times by clicking on a file then maximizing imported item window and it has yet to freeze and close down on me. You can try that out first Mike to see if it may have to do with the Adobe Reader version on your computer.
