After 5 loyal years, my Canon Digital IXUS 400 has given in... i can take pictures, but there are red stripes all over them. Maybe it is something fixable, but i've been meaning to replace the thing anyway. So, i put it in a plastic sealed bag in the freezer, which the thermometer indicates is at -21 degrees Celsius. What will die first? The accu? Will it overcome the powers of nature and keep functioning?