thanks for the reply jido-genshi , I wonder why we're the only one's that have mentioned experiencing this? My Sub 37 is in the upper 300 range serial, not that I think that matters, as this appears to be a software issue with changing or doing something with presets, and hopefully nothing to do with hardware. I can't recall what made it freeze the other times, but this new freeze happening every time on that preset is crazy.
That said, I can't really decide how I feel about this Sub 37 anymore.. I mean, I accepted the left side panel, even though mine shows a little light out the edge, I've accepted the slightly uneven keybed, its not so bad I tell myself, and I actually accepted the first couple of freezes, but now collectively, I am kind of like, well maybe I should save the money and just wait for something else. Though there is nothing out there right now that compares in features and in price in my opinion, so I feel stuck.
... I also created a preset, saved it and every time I go to this particular preset it instantly freezes the Sub 37 forcing a power down restart. Once restarted I can navigate normally, but if I go back to that preset, it freezes again... Every time. Perhaps its the first Sub37 virus preset.. 
or is there something in the settings of this preset overloading the sub 37? Ugg.. I'm going to give it a couple days, but I'm leaning towards a return, though I love this Synth already. I am just not down with it freezing like this... 
