Bit earlier than expected, but down nonetheless. The Myth II b.net server has gone down for the move to Redmond (or rather, as suggested by some folk on RHL, into the Seventh Circle of Hell), but all isn't lost.
The Townhall has word that Glue the Moose is organizing games on their HL server at 24.15.138.107 (Login: mwc, Password: mwc), and we're doing a bit of the same at RHL, at hl.rampancy.net. So if you're looking for MWC practice matches, just stop buy a community HL server, and you shouldn't have much trouble finding players.