I just attempted this mission with several people.. According to the in-game mission statements, we followed each step according to plan: Scan nodes, then destroy several of the repair hubs. Once the counters filled, there was no feedback or exp given. One guy started wining about doing it wrong, but if that was the case, then the counters would not have advanced. I just think there's a scripting error.. Hopefully there will be a resolution soon
Read the quest log again, no where in the text does it day HUBS. The HUBS are the Klingon objective, so killing hubs essentially wins them the game. I sat in this event for a few good hours yesterday, and watched as the klingons laughed at the ******* for the free xp.