Like you, I'm curious because I bought a 22" Samsung in October and initially it seemed uncertain about itself.
I tried both analogue and digital connections and have now settled for the DVI one, though I don't see a difference! (XP Pro by the way).
The whole thing seemed to have to go through a learning process.
A small square appears at the top left of the monitor and cycled every few seconds between Analogue and Digital. Also at the beginning it needed a reboot to make it settle for the correct configuration, and for some time afterwards still seemed unsure what its part in life was supposed to be!
Within a few days it settled and doesn't mention Analogue any more!
Daft I know but that is what happened to me and again like you I'm very pleased with the monitor.