/usr/local/apache/logs/error_log
Can you please provide more details like when are you getting 500 errors? while browsing websites hosted on server? can you please paste exact error here?No other error messages anywhere, ports are up to date nothing different.
Great to here your issue is resolved. Basically, suPHP is more secure for running PHP applications. It will prevent 777 permissions to files and folders. With suPHP 777 is equivalent to 755. It was giving 500 error because of 777 permissions of your website files and folders.Well its fixed, rebuilt apache without mod suphp then rebuilt it again with and now it all works.
We have always had suphp on our server with no problems, so it wasn't a permissions issue. We had to rebuild apache without it and then rebuild it again with it, so all I can assume is there was a problem with suphp.Great to here your issue is resolved. Basically, suPHP is more secure for running PHP applications. It will prevent 777 permissions to files and folders. With suPHP 777 is equivalent to 755. It was giving 500 error because of 777 permissions of your website files and folders.