These items have been discussed at two of the major remaining Myth sites, MythVillage and MBO, but we'll reference it here just for completeness. MythDev, a group of developers continuing to update and extend Bungie's original Myth games, Myth: The Fallen Lords (TFL for short) and Myth 2: Soulblighter, recently released a patch for Myth: TFL called 1.4. Among other things, it allowed users of Mac OS X to play TFL natively.
However, the patch also broke compatibility with one of the two remaining metaservers for Myth online play: MariusNet. Which, in itself, might not be a huge problem... except that MythDev runs the only other remaining metaserver, PlayMyth.