502 bad gateway error

We have an internal server here at work that we use for staging purposes.  Yesterday there was a power outage - and when we turned the server back on today it's being glitchy.

I'm a PHP guy - with minimal knowledge of server configurations - so any help would be greatly appreciated.  :)

Here's what I'm getting:
If I ping the server, using the domain name, I get the appropriate response.  It's being found.
If I attempt to make http calls to it (meaning - through my browser) - the connections are rejected.  On Chrome it gives an error 102, and on my phone it says error 502, bad gateway

What could be wrong?  Where would you start?  :)

A little bit of info on the server:

Fedora 12
Has Railo installed on it
Has Tomcat installed on it
I'm assuming it runs off of Apache - and that neither Railo nor Tomcat are substitutes for apache, correct?
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Do you have a proxy enabled in your internet settings?  Disabling it might get you to connect.
erzoolanderAuthor Commented:
I assume you mean on my client devices (computer, phone, etc)?  Nope.

Everything was working up until the power outage...which impacted only the server here.  So - I'm guessing it's not a client computer issue.
Default location for error log files on Fedora is  /var/log/httpd/error_log.  That file should be able to give a better clue (feel free to post it here if you can).

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