Over the past week or so, there have been a couple of times when I have logged into Outlook 2011 for Mac first thing in the morning to find a new email has lost it's attachment.

The odd thing is, when I check the same message on my Blackberry, it shows that there is an attachment. However, I cannot open it or save it to my Blackberry memory card.

If the email has also been sent to a colleague using Outlook for Windows, they received the attachment okay.

Any email that arrives after logging in, with attachments, arrive okay.

Any thoughts?