After installing Lion, Safari is Not Working

Question

Problem:     Trying to access my website  http://www.johnrollow.com I get this error message.
   Not Found
   The requested URL / was not found on this server
   Apache Server at www.johnrollow.com Port 80
I get the same error message from  both Safari (5.1.1) and Firefox (7.0.1).
I installed OSX 10.7.2 (Lion) about two weeks ago and had not tried to access the website since then.
Hostgator confirms the site is accessible.  From myWindows netbook, which I rarely use, it is also accessible.
What is causing the browsers on my MacBookPro to fail?

Answer 1

Third-party system modifications are a common cause of instability and poor performance. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions -- they’re easy to carry out and won’t change anything on your Mac.
Launch the Terminal application, copy or drag -- do not type -- the line of text below into the window, and press return:
kextstat -kl | awk ' !/apple/ { print $6 $7 } '
Post the lines of output (if any) that appear below what you just entered (the text, please, not a screenshot.)
Next, do the same thing with this line:
sudo launchctl list | sed 1d | awk ' !/0x|apple|com\.vix|edu\.|org\./ { print $3 } '
That's one line, not two. You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. You don't need to post the warning.
Next, this command:
launchctl list | sed 1d | awk ' !/0x|apple|edu\.|org\./ { print $3 } '
Again, one line. Finally, one more:
ls -1A {,/}Library/{Ad,Compon,Ex,Fram,In,La,Mail/Bu,P*P,Priv,Qu,Scripti,Sta}* 2> /dev/null
Important: If you synchronize with a MobileMe account, your me.com email address will appear in the output of the above command. Change it to something like “[email protected]” before posting.
Remember, this is all drag-and-drop or copy-and-paste, whichever you prefer -- no typing, except your password.
You can then quit Terminal.