Thanks for your replies, no I am not catching fob and keeping button pressed, and yes the latch is triggering and opening the door.
If the fob is pressed once to open the drivers door, everything works ok, i.e. turn ignition on and door stays shut.
Yesterday, when the fob was pressed twice to unlock car, the door opened, so I took the door panel off, cut a flap in the membrane,
and sprayed wd40 everywhere. It did'nt do any good, it's still the same, so I took the window fuse out, just in case the glass got frozen
to the door rubbers, and knackered the window mechanism.