I had that too:
Just before my vacation a month ago I decided to give SHIII a little rest.
I ended up playing -and enjoying- Rome Total War, some Call of Duty and even some sporting games....I had hardly touched any other game since buying SHIII: I even recall putting AoD and SHII to rest only to come back some time later.
And guess what.....here I am again off the coast of Ireland chasing ships again......
Must've been war fatigue but after a nice shore leave I'm ready to go
