File does not exist: /var/www/html/mod_pagespeed_beacon

```
What steps will reproduce the problem?
1. Go to modpagespeed.com
2. Open firebug
3. Notice 404 for /mod_pagespeed_beacon
4. Notice [error] [client <ip>] File does not exist: 
/var/www/html/mod_pagespeed_beacon in error_log

Notice by chan on discuss list
```

Original issue reported on code.google.com by `sligocki@google.com` on 21 Jan 2011 at 7:01
