Due to CLC of a well known british carier i have seen it take up to 2 hours for a loadsheet positioning aircraft back to their hub after diverts.
Theres nothing worse than having to wait for a loadsheet from CLC and having the captain shouting at you for something thats beyond your control.
I would say Dispatcher/Load Controller is a very fun job on the whole, especially meeting new crew all the time and seeing some familiar ones too, also time goes quicker working with new challenges arising at any moment.
I much prefer the role of a Dispatcher/Load Controller to a check-in agent or baggage handler especially now the lo-costs are charging more and more and clamping down which is causing a lot of arguments at either the check-in or at the gate.