I recently upgraded to Outlook 2010 and noticed I started getting conflict messages. It happens when several users try to update a public folder item within a short amount of time…which leads me to believe that whatever is in our public folders is no longer “live”. I also noticed that changes I was making in a contact public folder weren't appearing if I went to look at them on another computer. Also the little blue double arrow symbol next to the public folder periodically changes to a sharing hand (never happened before). Any advice you could give would be greatly appreciated.