Thanks EK, that explains it...I dumped the data as an unsigned int instead of int. I think HEX input would be helpful as a user, you wouldn't want to have to convert all your unsigned inputs to signed inputs, so if you decide to change the core server to support HEX, please let me know as I'll need to update the C parser as well....but once again....something that can probably wait for after mainnet launch
EK, I went ahead and modified the miner to allow for hex inputs in case you decide to add this to core at a later point.