Time: around 23:00 and ~20:00-21:00 CET
Frequency: two times
World name: Odin
Character name: Baltais Elfs
NPC name: Not applicable
Monster name: Tonberry King, skeletons in wanderers palace (don't remember their name)
Class/Level: Dragoon 50
Party or solo: Party
In-game time: don't know
Area and coordinates: once in Wanderers Palace on the last boss, other in wanderers palace on the skeletons after 2nd boss.
Steps:
1.Tonberry fight. Fight Skeletons
2.Error code 90,000
3.Authentification error
4.Game exits

I know that bunch of ppl got DC'ed when we were putting a party together for Titan