Rastabasta, you're welcome. I find that between this forum and the other one at saab9000.com, there isn't much that isn't covered by someone!
Maptun9000, I'm not familiar with the details of the Saab central locking but I believe that on some other vehicles, the rest of the door solenoids are effectively slaved off the drivers door such that whenever you operate the drivers door lock, all the others follow suit.
So if the drivers one isn't making contact then the others will fail too. Given that you've said that it doesn't matter whether it's from the remote or the switch, that rules out the remote operation and hence you'd need to find out where the master operator is. I'm not much help here but I think i'd assume that the main loom is ok and concentrate on the bits that move which would be the door mechanism.
Apologies if this takes you up the garden path with no result. Hopefully someone else will have a better suggestion.
David.