Mentioned ssh and uploading public keys.

cvs.html

@@ -88,6 +88,16 @@
       file.
     </p>
 
+    <p>
+      Make sure that you <strong>really use ssh</strong> to access the CVS
+      server. Have a look at the file <em>CVS/Root</em> in your local
+      repository. It should contain a line starting with <em>:ext:</em> and not
+      <em>:pserver:</em>. If you don't use ssh, your password is not encrypted
+      and CVS log messages won't work. You can use the usual ssh access
+      methods. E.g. you can upload your public key so you don't need to enter
+      the password every time.
+    </p>
+
     <p>
       The rules are pretty simple: If you change anything in your backend, do
       whatever you want. Just don't break compilation :-). Don't change