Bitcoins suddenly moved to 'unconfirmed'

I had bought 0.34 bitcoins. When I received those, I had a total of 0.35 bitcoins in my wallet. Then I tried to send someone 0.33 bitcoins and after clicking send it said unsufficient bitcoins (I had not put in my password so it definitely didn't send).Then when I returned to my wallet, all of my 0.35 bitcoins are now 'unconfirmed'. I tried restarting the client mutiple times but still nothing changed. I am using the MultiBit client.EDIT: I fixed it by renaming my backup folder and loading my new backup folder into multibit. via /r/Bitcoin http://bit.ly/2fJ86tG