He has not failed in jobs. No one expected him to be careless or un-disciplined in his personal dealings.He was said to have been a successful minister even though he failed to dispel his reputation as an arch manipulator.
is an extremely clever and able politician, but like so many clever and able politicians he's flawed. There's nothing particularly earth-shattering in that; lots of people are flawed, in fact most if not all of us are.
The difference is that most of us aren't ever likely to be in a position where we can use our influence in quite the way that Mandelson appears to have done. In the past He's demonstrated a penchant for thinking that perhaps he doesn't have to play by the same rules as others, and it's difficult to judge whether or not time has caused him to reflect and repent. For that reason, and because he and Gordon Brown quite obviously couldn't stand the sight of each other in times past, I'm very surprised indeed to learn that he's coming back into government.