The solution to this screen issue is simple.
This happened to me in Centos 5 as a user, but I also su'd to it and I don't have any password for it.
I've read some people say this is more common when su'ing.
The solution is simple though, just give others rw access to the corresponding pts whether it's 0,1,2 etc..:
As root do
chmod o+rw /dev/pts/2