Its true to say that many things have slowed down the development of the LHC and its Associated experiments (ALICE,ATLAS,CMS,LHCb).
The final nail in the coffin was the failure of the inner triplet component;
The LHC is a 27km tunnel with two inner tubes, carrying and propelling particles in opposite directions. The inner triplets sit at the 4 collision points where the experiments are placed. These parts were not correctly tested by our american friends at Fermilab. As such, we in europe, have to wait for the americans to fix their part.
Its also worth noting that CERN and Fermilab are in a race to make some similar discoveries. Will this failure in design by Ferimlab allow them to take the lead...? Conspiracy theorists, do your worst!