I have always seen the same result with them. If the group is composed of my guildmates, we rock the dungeon and move on. But my guild is a PvP-focused one, so our PvE groups are rare. I'm about to outlevel veteran Spindleclutch. So, that brings me to pickup groups.
Every. single. one. that I have been a part of, one of two things happen: It disbands immediately or everybody knows each other except for me, they wipe, and they blame me. My ignore list grows.
I'd listen to their criticisms if they ever said anything that isn't already known to be untrue. "Only templars can be healers." "Sword and shield can't DPS." "Just use AoE taunt." Yeah, it's that bad.
Is there a trick to finding functional groups for these things?