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.
Zandervix postulated at MBO that this was a calculated move to "grab power" away from MariusNet. Later, having received more information about MythDev's actions, including the fact that they ported Myth 3's network layer backwards to TFL, which is the reason for MariusNet incompatibility, Zandervix retracted that statement, but still wondered why a patch without this incompatibility couldn't be released.
Not to be outdone, MythDev then released yet another update, this time the 1.4.2 update for Myth 2, and is also now testing ranked play for Myth: TFL.