USE THIS TO INSTALL LAMP ON UBUNTU
sudo apt-get install apache2 mysql-server mysql-client php5 php5-mysql
SAVED MY LIFE
Why does your server have wireless? And why not install the Ubuntu server edition as it IS for servers. Yes, no GUI, but Ubuntu offers a kicka$$ server guide with step by step directions. I have been hosting my own sites in my basement for over a year now with the help of dyndns. Uptime? Well, I had to restart maybe 4 times. The power going out was responsible for 3 of the 4. Once I had to restart after a coppermine installation went resource hungry (reboot, works like a charm now.)
Ubuntu desktop is great, but it is not streamlined for server usage.
This thread is from a couple of years ago.
For anyone else reading this, responding is unnecessary and most likely unhelpful.