I've seen a lot of posts about FileVault issues, so it doesn't seem like a good program. (Once I get this fixed, I will definitely uninstall FileValt.) Another thing I've tried doing is uninstalling FileVault through both of those accounts.
With due respect I'm sure FileVault is fine, almost always when people have difficulties with an application it's because they don't have a good grasp on how to use it. I think it would be
extremely unwise to attempt to uninstall it, it's part of OS X. If you don't want to use it that's another story but trying to uninstall could create some serious side affects that you would soon regret.
I would recommend you book an appointment at your local Apple Store and work with someone that can help you. Either that or contact AppleCare and work with someone senior enough that knows FileVault well.
*NOTE: After posting I decided to look a little closer into FileVault by studying it in a Snow Leopard Book. Here is what it says:*
*DON'T EVER FORGET THE MASTER PASSWORD, or you will never see anything in your Home Folder!* It goes on to say +If you forget your login password and also forget the Master password, everything in your home folder is lost forever.+
While I'm not sure if this pertains to the issue you are having it may. If possible if you have been using Time Machine restore your system to an earlier time when you weren't using FileVault and see if that helps. However before taking such a dramatic step I'd recommend getting some professional assistance first.
Message was edited by: rkaufmann87
