I agree with you very much about your bike as i have just got an 06 XT660R the other day. The suspension is soft but i think after a few weeks of getting used to it i might buy a set of kevs suspension spacers to see how much that effects the first suspension dive. Some of the people that have fitted them say they give better ride, less dive on the forks, but a but of a harsher ride!!
Will have to see for my self but at around �25 or something they are a bargin.