Cubase 5 won't shutdown

Hello, I’ve been having this issue for some time now and over all revisions of C5. I’m finally fed up with it enough to seek help.

Frequently when I shutdown Cubase it just hangs - it won’t close. It then hangs my PC which will not shut down as well. SOmetimes I get luckly and it shutsdown, but it always takes what seems like forever to do so.

When it has this issue it also frequently loses it’s settings upon starting up again - preferences, ASIO driver, full scan of VST plugins, etc.

I suspect it may be some conflict with my Audio Card/Driver, but I don’t know for sure. (M-Audio Delta 1010, running the latest driver version.)

ANy help/advice to troubleshoot or fix is much appreciated