Ah!! OK, that makes sense. Any ideas how I can access my bootcamp partition. It is greyed out in disk utility and cannot mount. Using 'option' key on bootup does not show the windows partition - only the recovery HD. Have tried reFIT-OSX. It shows the Windows partition but selecting it to boot with, it responds with 'insert boot disk' or something like that.
Having a similar issue on my girlfriend's MacBook. Read somewhere that MacFUSE may be causing this issue, nto sure if you had that installed before you upgraded.