diff --git a/docs/userguide/components.rst b/docs/userguide/components.rst
index c77f9599a..ed148af89 100644
--- a/docs/userguide/components.rst
+++ b/docs/userguide/components.rst
@@ -39,11 +39,11 @@ Finally some perl scripts in the scripts directory. These scripts all have some
 **zmpkg.pl**
   This is the ZoneMinder Package Control script. This is used by the web interface and service scripts to control the execution of the system as a whole.
 **zmdc.pl**
-  This is the ZoneMinder Daemon Control script. This is used by the web interface and the zmpkg.pl script to control and maintain the execution of the capture and analysis daemons, amongst others. You should not need to run this script yourself.
+  This is the ZoneMinder Daemon Control script. This is used by the web interface and the zmpkg.pl script to control and maintain the execution of the capture and analysis daemons, amongst others. You should not need to run this script yourself, although you can use it to start/top individual ZM processes.
 **zmfilter.pl**
-  This script controls the execution of saved filters and will be started and stopped by the web interface based on whether there are filters that have been defined to be autonomous. This script is also responsible for the automatic uploading of events to a 3rd party server.
+  This script controls the execution of saved filters and will be started and stopped by the web interface based on whether there are filters that have been defined to be autonomous(background). This script is also responsible for the automatic uploading of events to a 3rd party server.  Prior to 1.32 there was one zmfilter.pl process.  In 1.32 onwards we start a zmfilter.pl process for each background filter so that the processing time of one filter doesn't delay the processing of another filter.
 **zmaudit.pl**
-  This script is used to check the consistency of the event file system and database. It can delete orphaned events, i.e. ones that appear in one location and not the other as well as checking that all the various event related tables are in line. It can be run interactively or in batch mode either from the command line or a cron job or similar. In the zmconfig.pl there is an option to specify fast event deletes where the web interface only deletes the event entry from the database itself. If this is set then it is this script that tidies up the rest.
+  This script is used to check the consistency of the event file system and database. It can delete orphaned events, i.e. ones that appear in one location and not the other as well as checking that all the various event related tables are in line. It can be run interactively or in batch mode either from the command line or a cron job or similar. In the zmconfig.pl there is an option to specify fast event deletes where the web interface only deletes the event entry from the database itself. If this is set then it is this script that tidies up the rest.  We do not recommend fast event deletion and we do not recommend having zmaudit.pl run in the background.  It is a very ram cpu and disk io intensive program, constantly scanning every event.  Please run it manually or from a cron job on weekends or something.
 **zmwatch.pl**
   This is a simple script purely designed to keep an eye on the capture daemons and restart them if they lockup. It has been known for sync problems in the video drivers to cause this so this script makes sure that nothing important gets missed.
 **zmupdate.pl**