As above, the rear passenger side door on my 2004 Mk5 won't open from outside, after the the doors have locked/un-locked. Once you open the door from inside, it then opens fine from the outside! That is until you lock/unlock the doors again..........

I did tighten the cable that goes from the handle to the lock mechanism, to take out a bit of slack in the cable, but this hasn't made any difference.

So I'm assuming it's something to do with the central locking but not sure where to start.