Stas,
Thanks.  In ACL there's no complaint, but I think I see why. In another file for this same system the author has previously done the import, and since ACL allows defpackage to augment any previous properties for the package, it works.
Pete
bonasso <bonasso@traclabs.com> writes:

Whenever I try to export a symbol to cl-user from another package,
like (export '(memory-apropos) :cl-user) while in a package called
memory I get 

"The symbol memory-apropos is not accessible in package
COMMON-LISP-USER"

But if I do:

(in-package :cl-user)
(import 'memory::memory-apropos) 

it works.

Is this a bug?
No, that's how EXPORT and IMPORT work.