I have two users that have noticed these symptoms... When reading an email lets say 20 down from the 2nd email the 2nd email is marked read when reading the 20th email. This being the inbox... So... Emails are being marked as read when reading other emails... You read email A but email B is also marked as read... It's very random and the position of the email is random too... It could be the 3rd email marked as read when reading the 10th email... Any ideas? The email clients are connected to Exchange 2010.