I'm using untangle 5.3, I think. It's so problem free, I'm never in it! Love you guys!

Using IceApe on Lenny, I've been getting emails with attachments delayed. I see the paperclip.....but where's the attachment? I come back later and it's there? Does Untangle hold back attachments and scan them or something? I can't figure out where the problem is or if it is a problem. Any thoughts?