We have OWA users occasionally experiencing delays of several hours in mails appearing in their 'Sent Items' folder. The users send an email via OWA that is delivered to the recipient, but if they look in their Sent Items folder the mail is not there. Several hours later the email will appear in their Sent Items folder. The server is running Exchange 2007 SP1 and is relatively lightly loaded (60 mailboxes). It is a single-server configuration, OWA and all other services are hosted on the machine. Thanks, jon