One issue with FastCGI is that out of the box it may prove problematic. It needs some configuration, and many new server administrators find it difficult to find solutions.
A very common error is mod_fcgid: HTTP request length exceeds MaxRequestLen. The solution is simple.
Using FastCGI has many advantages over DSO or SuPHP, but can become very annoying if you don’t have a lot of experience to configure it correctly.
The most common problem with mod_fcgid is the timeout error. Some people try for hours without success to resolve this, by editing the PHP configuration and can’t understand why it is timing out despite the Timeout is set high enough.
