SSH remote using XQuartz dosent work in Lion I was using previous version of Mac and used to connected to a server with SSH console.It used to run X 11 after loading my requested programs(Mathematica) on remote server and was working properly.Recently I upgraded my Mac to the latest version(Mountain Lion 10.8.4) and this SSH is not loading the "X" and I can not use remote access to my requested program from remote server.How can I fix the problem.Please in a easy way because I am not in using Mac commands at all.

Thanks
As per this page, X11/XQuartz is deprecated from OS X now, and you will need to install it seperately in order to get any X-Windows display manager type stuff working:

http://support.apple.com/kb/HT5293

There seems to be another X11 download here which may also be useful.

http://support.apple.com/downloads/X11_for_Mac_OS_X_1_0