Screen Multiuser Mode Fails

[Schiz0]

uname -a:
FreeBSD Jupiter 6.2-STABLE FreeBSD 6.2-STABLE #0: Tue May 29 06:10:49 EDT
2007     root at Jupiter:/usr/obj/usr/src/sys/SCHIZ0NET_JUPITER  i386

This error is an exact copy of this error:
http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/55326
Except, that PR was closed in 2003.

I created a screen session using "screen -S test"
I set ":multiuser on" and ":acladd testuser"
testuser tried to connect to the screen using "screen -x..."
The testuser screen session hands, and the original screen session displays
the error "Attach attempt with bad pid(###)"

I am using screen-4.0.3 from the ports collection.

If anyone needs more info, feel free to ask. I'm just trying to use screen
teach my gf some bsd skills ;-)