I have three boxes all running SL. The basement PC is running an NFS file server, nothing fancy, just an old SL 4x KDE version with NFS exports. The main PC is running a new SL 6 install and so far so good except for this ssh issue. The test PC is running 3-boots: Linux Mint 11, SL 5.5 KDE, SL 6 KDE. All pings to any host IP addy are fine as in will return with no packet loss, so ping is not an issue.
Here is the problem:
The main PC is running SL 6 (no multi-boot) and can ssh into the basement PC (SL 4x) NFS server just fine, but not vice versa.
The test PC, if it is booted into SL 6, can ssh into the basement NFS server (SL 4x) just fine, but not vice versa. If it is booted into SL 5.5, then ssh will work with the basement NFS server (SL 4x) and vice versa. The main PC running SL 6 can ssh into SL 5.5 but not vice versa.
If both SL 6 are running then neither can ssh into each other. In other words, ssh in SL 6 does not work, at least in my case.
The 'rc-update add sshd default' is common to all. I have mucked around with the /etc/ssh/sshd_config files on the SL 6 boxes for the past several days with no success. The SL 4x box has its sshd_config file unmodified since the day it was installed a over a year ago. For the test PC with its multi-boot, its SL 5.5 sshd_config file is also unmodified.
Hopefully someone does have success with ssh in SL 6 and instruct me on how to get this to work.

