I think so too. Somewhere it seems to cause stack corruption but until now no-one has found out what the problem is. The most annoying thing is, that it doesn't happen at all cycles. That might sound odd, but it's a hell to solve a bug that can't be reproduced consistenly. To me it seems like it happens completely at random.

If anyone knows some 99%-sure way to trigger it (other than just keeping cycling until it happens), I'd be happy to hear about it!