Copy and paste the exact message. Are you trying to login to cPanel at http://yourname.x10hosting.com:2082? Or, is it when you view your site? If it's when you view your site, they are aware of the problems and are working on them.
Site Software is being phased out of Cpanel. Most of what was in Site Software can be found in Fantastico.
Please search for your software in there instead.
Yeah, that's correct, pretty much everything can be found in fantastico, anything you can't find there i'm sure you will still be able to find somewhere, if you have any more troubles let us know.