Logout Twice

Hi all,
Wondering if anyone has seen this one before. I have an Windows NT 4 Server, running SP6a and all hotfixes. Some time ago it began requiring me to log out twice before it actually would log out. It doesn’t matter how you logout. You will have to do it two times or the desktop just stays put! I can’t find any articles pertaining to this strange happening. Help is appreciated!

Thanks!