Game will crash when fighting multiple Robo-Scorpions Mk3, Mk3b, Mk5 and Mk5b. This has most frequently happened while fighting them with a Shishkebab, where the game will freeze mid-swing, usually after having defeated at least one of them. I've not tested, for sake of certainty, to see whether the game crashes if I back off and let the first one explode before laying into the next one, but it seems to have an effect on whether or not the game freezes up.
Thanks!
Software: All current as of 7/26/11
Hardware: PS3