[sjn]

I love the fact that old threads are still visible!

I was having the same problem as ericpsmith.

In my case, I had published my OmniFocus 'due' calendar, and was seeing items with due dates twice within OmniFocus - once as an OmniFocus task, and again as a calendar item. I couldn't figure out how to hide that calendar, and assumed it wasn't possible.

Then, once I saw his posting (and thank you for following up with it!), I persisted, and found the (fairly well hidden) setting, and solved the problem.