Alot of the members on
my site have been reporting the same problems as well. The situation is a bit different in our case because we have an additional custom shop built on top of the uShop/uCash system. However, I think I have managed to work out what is happening:
1. User goes to bank to make a withdraw
2. User types in amount that they want
3. The script removes the money from the bank, but the money in pocket stays the same
4. User complains to me to fix the bank script
Based on what I have observed it seems to happen when they withdraw all of their money, but doesn't necessarily happen that way all of the time. As far as I know there have been no cases of money disappearing from the bank in situations where a withdraw was not initiated, but I could be wrong.