The Hidden Forest

I spoke to Giblet and got the 2.0 task for killing the dragons in Temple of Veeshan but when I completed the task and went back to him, he didn't respond to the hail. I got the "Your task 'Minions of Temple of Veeshan' has been updated." message, but he didn't say anything and he didn't give me the note to give to the guy in Icewell.
I also can't hail him again to pick up the task to re do it.

Happened for all 6 of my characters trying to perform the turn in.

*edit* Just to clarify, the task has gone from my task list.

Tried going to Icewell in case there was an internal flag i could use to carry on, but the dwarf ... well he's an angry man.

Logged out and back in (turn it off and on again, right?) and now Giblet responds to 3 chars with how i might be ready for the real task, but not to the other 3. And there are still no notes.

There's indeed an internal flag to follow task/quest progressions. Please make sure you are at the right stage of the task when doing turn ins and in range of the NPCs for a proper conversation. If you are uncertain of what to do, try to go back and forth in the quest while hailing the quest npcs to see their response. They should give you a clue where you are at progression wise.

If you are still having trouble then please make a post in the petition subforum as this will be an account related issue (hence the quest is functional for everyone else). Make sure to include character/account names, task names, quest npc names and as many details as possible so we can track the issue down.