I'm using 0.4.7
The wallet data has problem, using 'rescan' or 'wallet_rescan_blockchain' didn't work.
Restoring the wallet from backup shows error.
It solved by creating new wallet and importing all accounts private key (set false to rescan param), then run wallet_rescan_blockchain
Also, the new version 0.4.8 makes the transaction scanning much quicker.
Thank you all specially to CoinHoarder