one of my recent transactions showed a weird sign (probably due to a power outage whilst updating) it was a box with arrows in and out? a small deduction on my balance and n/a  in subject?. I did a rescan and expected transactions to appear as it neared completion? its been running a few days and although nearly complete (less than 10000 blks to go nothing shows? yet I have been using client for nearly a year? I am now getting worried I have corrupted my wallet.dat by doing a rescan yet it shows 148 kb's any ideas please (I am not very technical) reg