I use maildir for all my mailboxes, except the system mailbox in /var/spool/mail/<user> which receives mail from local processes such as cron, and which is in mbox format.
Mutt seems to detect new mail in the system mbox fine (at least, the mailbox is marked as having new mail in the sidebar - I'm using the sidebar patch.) However, for this solitary mbox mailbox, the <next-unread-mailbox> command doesn't work. It works fine for all the other maildir mailboxes. I've tried both with and without the check_mbox_size option enabled, to no effect. I'm running Linux with /var on a separate filesystem, and /var is mounted with the relatime option (which, as I understand it, should mean that check_mbox_size is unnecessary). Does anyone have any idea why <next-unread-mailbox> doesn't work for this one particular mailbox, even though mutt does seem to be detecting new mail to it, and the command works for all other mailboxes? Thanks, Toby -- Dr T. S. Cubitt Mathematics and Quantum Information group Department of Mathematics Complutense University Madrid, Spain email: ts...@cantab.net web: www.dr-qubit.org