Apparently the server downtime is partly to fix this major bug. Apparently if you traded a shield with the templar companion it would perma-log you from battle.net. Anyways lots of little unforeseen things crop up in a game this big.
Happy NON-customer and proud to NOT support online DRM (from Ubi or Blizz).
An MMO type launch for a simple Dungeon Crawler...
When PvP goes online, folks will be glad characters/gear are stored/validated by Blizzard instead of hacked in by players.