We have Exchange 2010 and Outlook 2010. The pc is Windows XP and we are working in online mode, not cache. When in conversation view, you click on a folder it appears to be empty although there are messages in there. I uncheck the converstation view and then the messages appear. I have tried to cleanviews and resetfodlers command however that does not work. I created a new profile but this did not work. I reinstalled the client and tried a different pc but stilll the same results. This does not happen with all the folders, just certain ones.