Syncing outlook calendar to iphone 4.
I have an odd problem syncing my calendar to my iPhone via itunes. Not all apointments will sync. They all appear to be birthdays or anniversaries. They are all recurrent but recurrent work appointments even far into the future will sync without issue. I have deleted and re-created some of the appointments that won't sync in outlook but they won't sync to my iphone (or ipod touch). Any ideas from you fine folk on the forum would be most appreciated.
iPhone 4 32gb, iOS 4, vista pc