Now it seems to me on what little time I have had to catch up on the coin, that no one should use their wallet in the current state. Correct me if I am wrong, but we all should wait for the 2.0 wallet. Unless ORiN sees different....
Yes, the safest thing to do is actually not even TOUCH your old wallet (anyways you guys shouldn't take the risk because from a binary perspective we don't know what's compiled into it), as that was done by the original dev.
Instead wait for new wallet release ,download binaries (built by me personally).. this will protect you since you won't risk being on the wrong chain in the event that a fork happens.. anyways it saves you from redownloading the blockchain. Booting up first time with new client will ensure that you have security patch running before connecting to other nodes/accepting blocks.
Btw, MintPal Jason is currently reviewing our changes right now.