Hi Did you get this working?  My wallet password is broken too after the upgrade and it seems after a reboot.  It worked on 0.5.1 after the upgrade and I recall the password worked 2 or 3 times but today I booted up and it does not work. 

I used my words to restore the password but it just sits there with a status of "working."  So frustrating!  Every time a new version comes out there is 'corrupt wallets' or some bug that kills the entire wallet. 
 
Any Ideas?