I had set up a box following the instructions from The Perfect Server - Ubuntu 11.04 tutorial. After receiving help from both Falko and Pititis, everything worked nicely. Last week I turned of the computer and kept it off for a few days. I turned it back on and can SSH into it via Putty (both from inside the network and from outside the network), but I cannot access ISPConfig from http://ipaddressOfMachine:8080. Even the default machine page http://ipaddressOfMachine:80 is not loading. I restarted the server and the issue is persisting. How to find out what is wrong and how to fix this issue?