I'm syncing to my PC. Windows XP Media Center Edition, Office 2007, and Active Sync 4.5.
I really think it has to do with he phone, and not my computer setup, because all my info is correct in Outlook on my computer, in my gmail calendar, my Microsoft My Phone, and my SPB Backup. It will do it no matter which way I choose to put the information on my phone.
I just found a thread that seems to show that others are having this problem also.
http://forum.ppcgeeks.com/showthread.php?t=101460