[Space Cowboy]

I have Fast User Switching set on wifes pc,and have 3 users and a admin account on the pc..lately it has started acting wierd.if u have someone else logged in..and u use the fast switching..it wont let u login under any other users until u log off account thats logged in...make any sense??..i want fast user because kids are always doing something,and if wife wants to check email or her ebay account,she doesnt have to wait for kids to close out what here doing..just."fast swicth" hehe..anyone know why this is happening?