Yes, as I wrote in another thread, Robotron is not stable. Classic99 seems to have similar problems with it.
The dumps you uploaded do not show any evidence of a crash; did you copy them immediately when your system froze? (... wait, this sounds somewhat silly ... ) If you look at the Xorg.0.log after a reboot, it doesn't have the stack trace of the previous run; in that case we need the Xorg.0.log.old.
You're using the fglrx driver, which I'm also using, but it seems as if mine is more recent: "module version = 14.10.2".
I think I downloaded 14.x - maybe I'll give it a shot. I know that one of the driver 'upgrades' I installed wasn't much of an improvement - I figured if it's not broke, don't fix it, so I have just frozen the driver at version 13.x.
My guess is now that I've restarted the computer a couple of times, the logs have been overwritten. What I could do is next time I go to restart the system, I'll fire up MESS in a terminal and try to insert the whtech version of RoboTron, if you're still interested in knowing about why I'm getting the freeze.
By unstable, do you mean just bad .bin images, or something even deeper than that (i.e., something do with the physical cart itself)?
Edited by RobertLM78, Fri Jun 6, 2014 1:10 PM.