Guild Wars 2

I love the story, and I love how thing are supposed to work but until they are fixed they need to be turned off or something needs to happen. I am sure everyone or almost everyone has experienced what my friends and I are dealing with. We try to run AC for example, head to path one get a group head in spend an hour clearing only to get to cave where hodgins is supposed to blow up the wall but low and behold he does nothing. No one in the group can figure it out, everyone has run before. Hours wasted, no loot, no token, no exp. So lets try path three! So we run path three and at the very end NPC did not open the door and we could not continue. So lets try path two. My friends game disconnected and he could not get back into our party. HOURS wasted. What can be done to fix this problem asap. Dungeons are like Russian roulettet at the moment.