We are on Exchange and the laptop users use an offline file. I have a Outlook XP laptop user who noticed a missing contact, and when we did a comparison back to October, he has 7 missing contacts. Other than user error (he is the CIO), is there any reason why random contacts would 'spontaneously' delete? Any ost file issues? Higher point count due to the fact that he is demanding an answer. I will accept leads that help me find the best solution/answer.