I've had a few of these, one with a dump, many without. As they happen more frequently, I'm noticing that they appear related to when our Portal goes on strike and stops responding. If I have a project connected to the temper-tantrum portal, a crash is inevitable. What happens is Pro "stops responding", I go grab a beer, come back, and it's either closed completely, or generated a dump (once). Didn't see this in any 2.2 version.