I've run into what appear to be some serious issues. The client appeared to have been restarting all night (the systray was still loaded with zombie icons)
I uninstalled, then installed the new version. Starting it, I received a critical error with the wallet regarding the db cursor.
Since the client would no longer start I removed all the files in the roaming directory again and got my backup wallet off my USB stick.
Now when I started the client it said 9 weeks out of date but then skipped synching. So the wallet no longer has an accessible balance.
First attempt indicated it might be forking, so I deleted the block chain and started again. The client appears to skip synching again.
Since I still have my wallet backup I'm not too worried about lost coins. Maybe just a little
Hopefully this is either an isolated or easily traced event.