If you get the message

  msgchk: -ERR Maildrop for user is busy. Please try again in a few moments.

when you try to incorporate your mail, It means that your mailbox on
the post office is currently busy.

This could be a transitory thing -- if another program was trying to
access your mailbox at the same time (such as running an automated
mail checker or typing "inc" in two xterms simultaneously), you would
see this message and you should simply try again in a few moments.

If you were previously using a machine that crashed or rebooted, it
may take a bit longer for the maildrop to unlock. If it persists
beyond 10 minutes, send mail to

	postmaster@mit.edu

and ask for your mailbox to be unlocked.  If you have this problem after
business hours, it should be fixed early during business hours in the next
business day.