I had initially used ns1.nsserver123.com as the nameserver on the new server but I changed my mind and tried changing everthing to ns1.totalinternethost.com...

I don?t think any particular one is really that much better than any other these days. If you?re using Linux or OS X then the OS that you?re using will...

I generally first setup mod_security with EasyApache and the manually recompile and install mod_security over and replacing the Cpanel installation patched...