'm not sure if I should report this as a bug or not, but it's definately wierd. In the normal mail view of Zimbra, I get an indicator next to the word inbox showing (9) messages new.
Yet this inbox is completely empty.
I tried hitting "Get Mail" assuming that it was just out of sync, but i'm still experiencing the problem.
The user who is having this issue is also POP'ing their mail out using Mozilla Thunderbird.
Attached is a picture describing the situation. It was excessively cropped to fit in with the very tight attachment requirements on this forum.