Ronaldo was absolutely superb this season, if he hadn't gifted half his penaltys to kaka to stop him being completely embarassed that would have been another 4-5 goals in the league, and he missed several fairly easy chances in pretty much every game, most of which he made himself.
Diarra's been brilliant there, Alonso has been his same over rated self, Benzema/Kaka's reputation seems to have stemmed more from Championship Manager than actual ability and it showed
Real's biggest problem is adjusting to a new manager with a completely different style every season, it just doesn't work. AS for Beckham, he was playing pretty well to be honest when Capello dropped him for no apparent reason, decided probably that Beckham was getting all the headlines rather than himself, looked an idiot, reinstated Beckham and the team did better.
Too many ego's at Real Madrid, and often the managers ego on top of that which is at fault. With the board perfering anyone hyped up or off the back of a great season instead of geniune world class players, and also they'd sign a more famous/expensive player for a position they have covered, rather than the best player for the position they need to improve in the squad. Alonso has been no where near as good as Diarra, but he was famous, and Spanish and a big name so they wasted millions on him, rather than buy a competant right or left back.