movemail fails to get lock

[Joe Pfeiffer <pfeiffer@cs.nmsu.edu>]

After some upgrades, when I try to use VM to read my mail from within
emacs, movemail has been unable to get my mail.  I've added some
switches to it to try to get a better picture of what it's doing;
currently I've got
'(vm-movemail-program-switches '("-vvv" "--debug-level=99" "--debug-line-info"))

When I try to fetch my mail with these switches, I get the messages

movemail: mboxrd.c:89: mboxrd_mailbox_init_stream:mu_mapfile_stream_create (/home/joseph/INBOX.crash): No such file or directory
movemail: mboxrd.c:96: mboxrd_mailbox_init_stream:mu_file_stream_create (/home/joseph/INBOX.crash): Success
movemail: mailbox `/home/joseph/INBOX.crash': cannot lock: Lock file check failed

movemail exited with code 1

in the *output of movemail /var/mail/joseph /home/joseph/INBOX.crash* buffer.

Does anyone have any idea what could be wrong here? Much googling has
not given me any ideas...