New mail notification

[John Indra]

Dear all...

I have this entry in my .muttrc:
mailboxes ! =dsniff ="@freebsd.org" ="@mutt.org" ="pau-mikro" \
="@postfix.org" ="@redhat.com" "@securityfocus.com" "libwww" "vpopmail"

Unfortunately not all mailboxes notify me when new mail arrives. Only the
first 7!?!
Is there some limitation of the mailboxes sum? Or is there something I must
tweak?

FYI using Mutt 1.2.5i

Thanks...

/john