There is a known problem with the ROM that was flashed on a batch of the Cyberstorm MK III's that Phase 5 put out. I spent a LONNNNGGGG time sending mine back to DCE who did eventually fix it for a pretty decent price (conidering it wasn't their unit)
Mine tending to act up as it got warmer. It may be just the unit but I'm not sure who works on them anymore.