It is not: "While Pakistan's President, Pervez Musharraf, has vowed to eliminate terrorists operating within his country, elements within Pakistan's ISI intelligence service may have sought to protect bin Laden."
Okay, unnamed sources from left wing newspapers have been bad mouthing Pakistan in general for a long time.
That said, I do appreciate the difference between "Musharref" and Pakistan's ISI as you point out. Yes, elements of the latter are more likely to betray us.
But, do notice the screaming Telegraph headline that says "Pakistan" and do notice that the sources are -- unnamed.