Shoutbox

I'm having a real problem.  I've always used the same password on all my messenger logs, and I haven't changed it at any time.  No one else has access to my pc, as it's heavily passworded.  But messenger plus keeps changing the password without any input from me.  I go back to a log, and it tells me the password is incorrect, even when I've double checked it.  I need to get back into some of those logs urgently.  I love messenger plus, but this is a huge problem, and one I've never encountered in the past.  It's nice to know it's not just me - I was starting to think I was going entirely insane!  The other thing I've noticed (which is probably in no way related) is that it doesn't ask me for my password when I sign in, and when I look at the preferences, that option is ticked, but greyed out.  Is it related?  I hope someone can come up with a fix soon, as I like to keep the files encrypted, but I still need access to them!  Thanks