I tried deleting everything but wallet.dat and redownloading the blockchain for a second time and got the same problems.  Looking into it further I noticed transactions larger than 0.00016 btc remain unconfirmed on my overview page even as they show as confirmed on the transactions page. These larger transactions are also missing when I go to the send coins page, click inputs, then click the drop down icon next to my address.  I did not allow the blockchain to fully download because of the error and because I have a new large transaction that is not yet part of my wallet.dat file. I am running version 0.8.1. I imported my private keys from blockchain.info in May.  Is -rescan, an option?  Is there any harm in allowing the blockchain to fully download?  Should I just use my wallet.dat file and update to the newest version of bitcoin-qt?