Getting dced after killing a boss in dungeon is unfair

Obviously, it is not on purpose. It just drives me mad that I'm gearing a character just to get dced after the first boss of PoS, only to find out that the boss doesn't give the loot and that I got registered until tomorrow. I understand the current situation and overflow, but this loses so much time to anyone that suffers from it ... I feel like something should be done, at least don't get me registered in something I've never had a chance to complete in the first place due to internal server problems.

Dude I feel you so hard. Did ToC25 on hunter the other day, we stomped through and we're mid fight on last boss, I dcd, quicky relogged and it teleported me out of the encounter and wouldn't let me enter. They killed the boss, I missed the achievement, and the next two attempts have been with fail groups that don't know how to do the pvp fight.