I've got the problem w/no new mail showing up unless I leave the folder and come back to it. I know that the prescribed solution is to turn off caching -- but I've already done it and I still have the problem.
I'm runing 0.1-rc1 on a debian box (installed via apt-get) w/Courier-IMAP on the same box as my mail server. I've followed the tweak I found in the forums to re-activate the preview pane (could that be my problem?).
For what it's worth, main.inc.php is attached.
PS -- I can't seem to send mail via the internal SMTP server either -- it only works if I use the PHP send command. Could that be because my SMTP server uses TLS?