Summary
The remote host is missing an update to openssh
announced via advisory DSA 025-1.
Solution
https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20025-1
Insight
A former security upload of OpenSSH lacked support for PAM which lead into people not being able to log in into their server. This was only a problem on the sparc architecture.
We recommend you upgrade your ssh packages on sparc.