Mac OS X 10.7.4, Pro Tools 10.2 native, system is clean, fresh, maybe one month old, permissions cleaned, all drives without errors, plugins up to date, tried to delete prefs and databases, installed and uninstalled three times, still the same.
About troubleshooting, I am suffering with Pro Tools for more than 10 years, I am familiar with all I need to check and do, but still have those crashes.
Everything worked well on the same system for about one month, I installed fresh system and Pro Tools 10, worked well for one month, then suddenly got again those Pro Tools issues...
edit:
Just made a video, a picture is worth a thousand words...
http://youtu.be/Sdc5nhB9BFM