After logging in via SSH, when SU to a local user I am getting a total of three password prompts. I can switch user ok after putting in the password three times. I've checked logs and looked over PAM modules trying a few different things, but have had no luck resolving.
Here's an example of the issue:
Last login: Tue May 8 9:37:45 2013 from admin.exp.com
admin@expdev01:~> su - expuser