Everything pretty well sorted now.

Exception is a few years old ACER notebook running Win7 starter. Only gets
used mobile with MegaSquirt, and it's just fine for that. It sees all
computers on the network and can talk to them. But none could talk to it.
It shown in the network, but non can connect to it, but it can to them.

Changed its name. Everything sorted. Change it back to the original name.
Blocked on all. No idea why. So just gave it a new name.

--
*OK, so what's the speed of dark? *

Dave Plowman London SW
To e-mail, change noise into sound.