Disclaimer: this bug has been filed in a semi-automated manner.
When emerging the package net-misc/openssh-5.9_p1-r4, the following elog messages are displayed:
* Please be aware users need a valid shell in /etc/passwd
* in order to be allowed to login.
Such messages should only be displayed when the package is a new install.
These situations can be checked in the ebuild as follows:
if ! has_version 'net-misc/openssh'; then
See the tracker bug 440214 for more details.
the package is part of the stage3 thus users would never see the message