If you use AppArmor security module, switch the AppArmor service off and remove it from start-up list before installing Panel. This is done by running the following commands:
Your latest PHP/MySQL website is finally online. And it’s awesome. But it’s not as fast as you want it to be, because of the many SQL queries running every time a page is generated. And above that, you have the feeling it will not scale well under heavy loads. And you are most likely right.