This is how I fixed an issue with several hundreds of coins were missing after wallet upgrade to 2.0.1.
I dumped a privkey of my old ONION address, renamed my existing wallet.dat, created new wallet.dat at wallet startup and imported a privkey to this new wallet.
Ant the result was:
At first I saw even more coins in the wallet (from upper row, i.e. about 810 ONION):
But after wallet restart my balance reduced to about 654 ONION (lowest row on the screenshot above).
Could anyone tell me, pleeeasee, what is the "Send" amount on this picture? I never did any outgoing transactions. Neither do I see any sent coins in transactions list.