User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.13) Gecko/20101207 Lightning/1.0b2 Thunderbird/3.1.7 When I receive a new mail that has an attachment, Thunderbird does not show the small attachment icon until I click to select the mail (and once I select the mail, the has-attachment icon shows up indicating that this mail has an attachment). This does not happen to every mail and so might be difficult to reproduce. I will try to capture the scenario next time it happens for the benefit of the developers. My setup is: 1. Use DavMail Gateway for my OWA mails 2. Use Thunderbird to connect to the DavMail server on localhost Reproducible: Sometimes Steps to Reproduce: 1. Get new mails into your inbox (with attachments) 2. Observe that sometimes the mails do not show the attachment indicator until you select the mail. Actual Results: the attachment icon does not show up, sometimes, even though the mail has attachments. When you click on the mail to select it (and so its body becomes visible in the message pane) Expected Results: The attachment indicator should show up whenever a mail has an attachment, not just when it is selected. Windows 7 Home Premium 64-bit