Chimes in with another non-bottom bracket click - I get a creak-click that sounds like someone dropping a ball bearing if I don't periodically reseat/tighten the quick release on my rear wheel. It was driving me bonkers. I had my LBS tighten the BB too - he did say one side (its and external BB) was a bit loose, but the creak remained until I tightened up that rear QR.

My husbands TT bike definitely has a loose BB - the sound it makes is a very loud snaping noise.