Doco - 10% of the issues take up 90% of the time. The worst offenders are documented here.

doc/technical_faq.bb

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+These are common questions with answers which are almost always correct.  Note these aren't the [i]only[/i] possible
+answers, they're merely the most probably answers.  90% of the time, these solutions should work.  The other 10% of 
+the time is when you should use a support forum.
+
+[b]I can log in, but there are no posts or webpages[/b]
+
+Your item table has crashed.  Run the MySQL command repair table item;
+
+[b]Login doesn't work, immediately after login, the page reloads and I'm logged out[/b]
+
+Your session table has crashed.  Run the MySQL command repair table session;
+
+[b]When I switch theme, I sometimes get elements of one theme superimposed on top of the other[/b]
+
+a) view/tpl/smarty/cache isn't writeable by the webserver.
+
+b) You're using Midori.
+
+[b]My network tab won't load, it appears to be caused by a photo or video[/b]
+
+Your PHP memory limit is too low.  Increase the size of the memory_limit directive in your php.ini
+
+[b]I have no communication with anybody[/b]
+
+You're listening on port 443, but do not have a valid SSL certificate.  Note this applies even if your baseurl is http.
+Don't listen on port 443 if you cannot use it.
+
+[b]I can't see private resources[/b]
+
+You have disabled third party cookies.
+
+[b]What do I need to do when moving my hub to a different server[/b]
+
+1) Git clone on the new server.  Repeat the process for any custom themes, and addons.
+2) Copy .htconfig.php
+3) Rsync everything in store/
+4) Rsync everything in custom/
+5) Dump and restore DB.

doc/troubleshooting.bb

@@ -1,5 +1,6 @@
 [b]Troubleshooting[/b]
 
+[li][zrl=[baseurl]/help/technical_faq]Technical FAQ[/zrl][/li]
 [li][zrl=[baseurl]/help/problems-following-an-update]Problems following an update[/zrl][/li]
 
-Return to the [url=[baseurl]/help/main]Main documentation page[/url]
+Return to the [url=[baseurl]/help/main]Main documentation page[/url]