+++ This bug was initially created as a copy of Bug #135925 +++

***NEW:  I have been able to ascertain what caused this bug.  In my home directory, under .kde/env there is a start-gpg-agent.sh script.  Inside this script, a new ssh-agent is started, which causes 2 ssh-agents to be running when you are logged into the console in a x session.  Commenting out this line in the start-gpg-agent.sh script resolves the problem, and allows nx to work correctly.  I don't know if this file is a carry-over from another installation or if it is part of a what is added to each users home directory if the are using kde.  Hope this helps.

Connecting to a running nxserver in opensuse 10.0 causes the error:
ssh-agent[] error:  accept from AUTH_SOCKET: socket operation on non-socket

This error is reported hundreds of times each second, causing the machine to become unacceptably slow.  It appears that the ssh-agent that is started is not used correctly.  And it also appears to only happen if the person logging in via nx is also the person who has logged into the console (with a running x session).  Other users can login via nx without exhibiting the same problem.
Killing the new ssh-agent stops the error reporting, but then the dbus-daemon starts spinning the cpu, making the machine almost unusable.