PST PRoblem
My problem was with outlook 2007 that it would not sync the Calendar, but did fine with contacts and bookmarks.
Here is what I did, but before you get started, go to me.com and create an test appointment any day ahead from now (like tomorrow). After that:
created a new pst file from the Tools Menu > Accounts > Data File (second tab) > add (file name contains no spaces);
set this folder as default;
exit outlook;
open outlook;
remove the previous pst file Tools Menu > Accounts > Data File
open the MobileMe pref menu from the control panel (now your account should be logged out. Go ahead and login!
open the sync tab and select to sync only calendar
click advanced and click to reset sync data, replace Calendar only, and choose the option to mobileme overwrite the oulook cal (first optionbox).
click replace;
exit outlook and open outlook.
check the calendar again.
I did this and worked for me...!!
Hopefully works for you...!