you’re one of the last person to whom I should be asking this but : did you report that bug ? Is it solved ? You could take advantage of the fact that Ton & co are on a bug crunching binge these days. I had three (four if you count one preemptive attack by Theeth) killed this and last week.
As for your Maya example that would be a lack of backward compatibility. Blender has been quite good for me in that respect for the last few years. Only recently is it that versions 2.45 and lower won’t start if the .B.blend was generated with 2.46 and higher.
Keeping with Maya I am not aware that they are that quick at releasing debug versions…
One thing I always wondered : why aren’t there patches that we could apply against the current official releases when a bug is corrected ? It would make Blender evolve in between releases nicely and we could end up with a rock solid version at the end of a cycle. If the debugging goes only to SVN part of this is lost, or so it seems to me.