Carfax report. Should I be concerned? **UPDATED**

[FSETH]

I asked this question in aother thread I recently started regarding the differences between diesel and gas X5's, but I am afraid it may have gotten buried, so forgive me if you have read it twice.

I am looking at an 09 X5 35d with 31,000 miles. It is being CPO'd as we speak. I put down fully refundable $500 deposit with the dealer to make sure we get first dibs on it. I feel good that the car is going to be a CPO and still has some original warranty left as well. However, when I took a closer look at the Carfax, I see that the vehicle was serviced quite frequently at a BMW dealer. It actually seems too frequently, imo. Should there be any reason why a reliable car should have been to the dealer for serivce 10 times within a 21,000 mile span? I know there may have been some recalls performed and I am pretty sure that diesels require specific emmissions fluid every once in a while, but this car seems to have been in for service literally every 2,000 miles in the past 2 years. Can there be any logical explaination for this or do I need to simply run away from this particular vehicle even if it is a CPO? Here are the dates and mileages listed on Carfax. All simply state, "vehicle serviced":

01/04/2010 - 7,797
04/06/2010 - 11,056
08/30/2010 - 16,658
10/15/2010 - 17,910
01/05/2011 - 19,134
03/30/2011 - 21,075
07/21/2011 - 23,837
09/27/2011 - 25,425
11/02/2011 - 26,330
02/24/2012 - 28,240

It may also be worth mentioning that all of these were under the same owner.