I've read others talk about having the V3i screen lock up and in addition to all the little gremlins that have plagued me through two V3i Machines (in the space of 3 months), I can now add this malfunction to the list. So has anyone determined what causes the machine to totally lock up? The only cure being to remove the battery and reinsert it. I'm not even going to get annoyed at the machine, it's not worth my time, but I am curious as to why this freeze up happens. I was using the machine with a 950 eclipse coil and went to change recovery delay and that is when the machine locked up. Full battery, Properly ground balanced, standard Coin&Jewelry program, no tricky add ons. etc.