Positive. Tested. Shown to Mark. He knows it's a bug. Random sequences are marginally off across processors and platforms. This thread shows the evidence; and no, it doesn't seem to be a problem exclusive to b+.
I hope so, but I don't think you can count on that. It all derives from a floating point inconsistency that has to do with the means by which Blitz generates random numbers... so while it =appears= to occur only at those rates, you could very possbly end up a few digits off at any level.