Added explaination of why setuid() is disabled when using HD44780

README.daemon

@@ -1,7 +1,8 @@
 On Linux, to run MMDVMHost as a daemon, set "Daemon=1" in the ini file. 
 
 When this is set, MMDVMHost will attempt to drop privileges to user "mmdvm" and 
-group "mmdvm". If this user and group on your system, an error will occur and 
+group "mmdvm". If this user and group do not exist on your system, an error 
+will occur and 
 MMDVMHost will not start. 
 
 To add these users, please do the following from the Linux command line:
@@ -12,10 +13,13 @@ usermod mmdvm -G dialout
 
 Note, without the last line, MMDVMHost will not be able to open the modem. 
 
-Also note, when running as a daemon, STDIN, STDOUT and STDERR are closed, so you 
-must use a logfile to capture logging 
-and the logfile entry in the ini file must be given a full path as MMDVMHost 
-calls "cd /" when daemonising. 
+Also note, when running as a daemon, STDIN, STDOUT and STDERR are closed, so 
+you must use a logfile to capture logging and the logfile entry in the ini file 
+must be given a full path as MMDVMHost calls "cd /" when daemonising. 
+
+Also, please note that the code to drop privileges is currently disabled when 
+MMDVMHost is compiled with the HD44780 display as it's currently not possible to 
+use this display as a non-root user.
 
 
 Simon - G7RZU