Guess what? I installed cpanel from scratch and I get the plesk default page at http://myip and the plesk server admin login page loads at https://myip:8443 though none of the login information I tried works. And apart from that whm/cpanel dont load at the usual ports!

Looks like something messed up with the cpanel install file! Or does anyone know otherwise? Ive emailed darkorb already about it, but at best I think itll be Monday before I get a response!