Had issues with mine freezing and randomly restarting - removed the SD card i was using as "internal" storage - and that seems to have fixed it....but my SPMC database is large at 4GB and has used pretty much all of my internal storage - thereby limiting apps I can install.
So...has anyone had any success with using an SD card as internal storage? I am hoping the answer is yes and my issues were due to a crap SD card...