Have you set up your team correctly so each toon has itself and every other toon in your team on its team list? See this getting started thread:

http://www.dual-boxing.com/threads/2...etting-Started

Also the starting area quests auto-accept behind the scenes (it's a Blizzard think, nothing to do with Jamba).

When I get the time I'll have to try that warlock quest, can you post a wowhead link to it?