Shoutbox

I've gone into preferences and unchecked the password box...then I press apply, and all it says is "Some of the changes will only be applied when chat windows are closed and reopened"...it doesn't ask anything about decrypting all my old archived log files like it is apperently supposed to (or so I've read here.)
Is there something I'm doing wrong?  Is there an easy way to decrypt all of this?  I'm reformatting my computer so I need to move everything to a different drive, and it won't let me open it as soon as I copy it to the other drive...it just says "the file does not exist"!
I've shut down and restarted and everything, after I uncheck "Encrypt all my logs", when I restart, it says "A password is currently recorded" again, with no option to get rid of it...