I'm using a fresh install of 6.0.4 NE Trial on Ubuntu 8.04. Installation appeared to finish perfectly and it functions well except for one thing - new emails come in marked as read.

I can create a brand new domain and a new account to go with that domain then as soon as I send it an email it shows up in the web client Inbox but it's marked as read. This is happening on multiple accounts and I can't seem to find a pattern. We are not using any mobile devices or external clients. Anyone have a clue what's going on here? Where should I look?