I downloaded the demo yesterday, v0.9.94, but can't find any servers.
Running on OSX 10.4.7, G5 iMac (PowerPC). My connections is via a network ADSL modem with a fairly tight firewall.
I opened port 9961 to register a new account, which worked, and 9967 (TCP and UDP) for game play, but no servers.
Initially I set NAT for 9967 UDP as well (didn't help) but then figured this was unnecessary as I wasn't hosting, so removed it.
I ran the update.app. It worked, although the version number didn't change.
Are connections to the demo servers limited to the US by any chance?