Elektron Musical Instruments

first off- this box rocks.  i havent been happier with a drum machine, ever (been thru tr909, er-1, xbase and a few others).

ran into my first problem this weekend, its not consistent, having trouble replicating it.  in record mode i was running a G-bank pattern 
(in pattern mode) and switched to another G pattern, which the machine did not visibly respond to (looking for that 1 arrow from 
current to next pattern).  hit the pattern button again but instead of a single arrow i got a double arrow, cycling between old and new 
pattern.  seemed to happen a handful of times- couldnt get that single arrow. i shut the machine down and booted back up, didnt have 
the problem again.  bootup screen shows D 1.12 (OS i presume).  is this a known problem?

tia.

angelzero.