said to not use rcvstore if you use the "Unseen-Sequence"
profile entry because the context (sequences file, actually)
could be corrupted if multiple nmh processes tried to update
it simultaneously. The locking added by commit
82a21b6f3cddf8ab048dcb02c080ea9797c73c5a serialized that
simultaneous update. [Bug #4361]
.SH CONTEXT
No context changes will be attempted, with the exception of
sequence manipulation.
-
-.SH BUGS
-If you use the \*(lqUnseen\-Sequence\*(rq profile entry,
-.B rcvstore
-could try to update the context while another
-.B nmh
-process
-is also trying to do so. This can cause the context to become
-corrupted. To avoid this, do not use
-.B rcvstore
-if you use the
-\*(lqUnseen\-Sequence\*(rq profile entry.