Added FAQ about zombie processes

doc/Support/FAQ.md

@@ -11,6 +11,7 @@
  - [How do I debug pages not loading correctly?](#faq7)
  - [How do I debug the discovery process?](#faq11)
  - [How do I debug the poller process?](#faq12)
+ - [Why do I get a lot apache or rrdtool zombies in my process list?](#faq14)
 
 ### Developing
  - [How do I add support for a new OS?](#faq8)
@@ -82,11 +83,16 @@ You will then have a two options in the footer of the website - Show SQL Debug a
 
 #### <a name="faq11"> How do I debug the discovery process?</a>
 
-Please see the (Discovery Support)[http://docs.librenms.org/Support/Discovery Support] document for further details.
+Please see the [Discovery Support](http://docs.librenms.org/Support/Discovery Support) document for further details.
 
 #### <a name="faq12"> How do I debug the poller process?</a>
 
-Please see the (Poller Support)[http://docs.librenms.org/Support/Poller Support] document for further details.
+Please see the [Poller Support](http://docs.librenms.org/Support/Poller Support) document for further details.
+
+#### <a name="faq14"> Why do I get a lot apache or rrdtool zombies in my process list?</a>
+
+If this is related to your web service for LibreNMS then this has been tracked down to an issue within php which the developers aren't fixing. We have implemented a work around which means you 
+shouldn't be seeing this. If you are, please report this in [issue 443](https://github.com/librenms/librenms/issues/443).
 
 #### <a name="faq8"> How do I add support for a new OS?</a>
 
@@ -153,4 +159,4 @@ If you want to pull any new updates provided by f0o's branch then whilst you are
 
 ```bash
 git pull f0o issue-1337
-```
+```