We're also experiencing this. It's followed the same progression: began with random, "silent" crashes to desktop without an error or hang. After about a month, it now hangs and must be closed with task manager. Can occur 10 minutes after opening or 2+ hours, the timing is random. The related Windows event viewer error messages are difficult to decipher and seem to point towards some kind of printer driver issue, but that may be an illusion.
