Was waiting for you to post.
Didint want to post the info myself until you were happy with it.
On a 2B board, it appears to be very random in crashing.
Once fixes are applied, its 100% stable, after running machine for 2 hours.
On a 1D4 board, it appears to crash when doing anything with the memory.
Again, once timing fixes applied, its 100% stable, after running machine for 2 hours.
As Jens said though, If it aint broke, then dont fix it.