Screen doesn't detach remote with -d

Hi,

didn't find an archive, so my apologies if this has been asked before.

I've used screen for many years from many different machines, and have
always used screen -rdU <session> to detach & reattach.

Suddenly, of some reason I can't explain, screen -d doesn't work. It
doesn't detach the remote, and behaves like if I'd invoked -x (multi
display mode).

If I test with two computers next to each other, the session on the
second machine will still stay open when I screen -d on the first
machine.

I've tried all combinations of -D -r, -DD -R etc.

Any clues?

I'm on Debian Squeeze with Screen version 4.00.03jw4 (FAU) 2-May-06.

Thanks!

-- 
Vegard Svanberg <[email protected]> [*Takapa@IRC (EFnet)]