yes, we tried it by purpose on a french forum (
http://www.polaroid-passion.com/) with fp-100c and fp-3000b for at least a month full deep frozen. the results were not bad. de-freezing in a normal fridge for a day and then one more day from fridge to room teperature. there was maybe a hint of magenta in the colour film, which disappeared from the photo after a day or 2 in daylight, and maybe the fp3000b was half an aperture less sensible. but nothing bad, our test was very encouraging. we did not test the polaroid original film which is said not to tolerate freezing. but who knows...