I noticed that too. Bush is not good at timing answers in a debate. He should know what he is going to say before he says it, and it seemed like he was barely keeping up. Almost as if he had waited till the last minute to prepare.
Kind of like if an organic chemistry student waits till the last week to study for an exam. A definite no-no. You make time to practice. Let Cheney/Rice handle affairs for awhile..they're good at it.
W was following the first rule for an effective speaker:
THINK BEFORE YOU SPEAK.
He was not like Robo-man with his preprogrammed "insert-card-here" ramblings.