-IRC Services 5.1.x can be used with ngIRCd using the "rfc1459" protocol
-module. At least the following settings have to be tweaked, in addition to all
-the settings marked as required by IRC Services:
+IRC Services 5.1.3 and above can be used with ngIRCd using the "rfc1459"
+protocol module.
+
+Please note that versions up to and including 5.1.3 contain a bug that
+sometimes causes IRC Services to hang on startup. There are two workarounds:
+ a) send the services process a HUP signal ("killall -HUP ircservices")
+ b) apply this patch to the IRC Services source tree:
+ <ftp://ngircd.barton.de/ngircd/contrib/IRCServices513-FlushBuffer.patch>
+
+At least the following settings have to be tweaked, in addition to all the
+settings marked as required by IRC Services: