Logging in Screenshot

Quick question.. During the login process you get the screenshot background from when you last logged out. Is there a way to disable that and just have the same screenshot all the time? or maybe a default one?
It's kinda of annoying when you don't live alone, and forget the last thing you were doing was editing a necklace closeup so that any RL people in the room get treated to these giant boobs on the screen lol.
I'm assuming setting that last screenshot .tga to read-only would just crash the viewer on logout, correct?

In your preferences, you can choose between last location and your home location for that screenshot. That way, you get the same one every time you log in.

There is also an option to have no screenshot at all, I think.

Wow, I'm glad I read this thread.

I've had some very embarrassing log ins at work lately. I ususally sneak in for about an hour or so (my bosses never ever come in until at least 10am) and nobody is there when I get in usually. But if by some chance someone happens to suddenly walk in as I'm logging on, they sure don't need to even see me hanging out in my hot tub in a bikini!

Thanks for that tip!