If you use SSH on your local network you may suffer from the annoyance that logging in takes several seconds (before you are asked for the password, if you aren’t using SSH keys for authentication, which by the way is something you should consider doing :)).
Well, so I’ve found a fix for this on a comment in another blog, and I thought I’d share it with you. Open /etc/ssh/sshd_config/, add «UseDNS no» on a new line somewhere there and restart the SSH daemon to apply the changes («sudo service ssh restart»). That’s it.
If this doesn’t help in your case, the blog post I’ve mentioned above has a few more tips, so just check those out.