Just one more question (it's a boring "Labor Day" weekend in New Jersey). When were the 68 and 69 switched from their previous routing (via St. John's Road, South Circular Road and Emmet Road) onto their current routing via Conyngham Road, Islandbridge, SCR and Inchicore Road/Con Colbert Road?? Maybe DB management has nothing better to do than to play with bus routings without concern for the customer, or a real necessity in doing something of the sort. I also noticed that the 68 no longer serves Monastery Road in Clondalkin; I presume that it's taking up the slack left by the eviscerated "original" route 51 (why not call the 51B the 51 instead, at this point??) and acting as the permanent Newlands Cross to City Centre route.
I just don't like the playing around. Get serious, DB management, and stop playing like gods. Clean up your act for once.