diff --git a/en_US.ISO8859-1/books/faq/book.xml b/en_US.ISO8859-1/books/faq/book.xml
index eaab6c11a8..e52f33370a 100644
--- a/en_US.ISO8859-1/books/faq/book.xml
+++ b/en_US.ISO8859-1/books/faq/book.xml
@@ -2493,9 +2493,19 @@ kern.timecounter.hardware: TSC -&gt; i8254</screen>
 	</question>
 
 	<answer>
-	  <para>An answer for this question can be found in the &os;
-	    Glossary, see <ulink
-	      url="&url.books.handbook;/freebsd-glossary.html#lor-glossary">LOR</ulink>.</para>
+	  <para>The &os; kernel uses a number of resource locks to
+	    arbitrate contention for certain resources.  A run-time
+	    lock diagnostic system found in &os.current; kernels
+	    (but removed for releases), called &man.witness.4;,
+	    detects the potential for deadlocks due to locking errors.
+	    (It is possible to get false positives, as &man.witness.4;
+	    is slightly conservative.) A true positive report
+	    indicates that "if you were unlucky, a deadlock would have
+	    happened here">.</para>
+
+	  <para>Problematic <acronym>LOR</acronym>s tend to get fixed
+	    quickly, so check &a.current.url; before posting to the
+	    mailing lists.</para>
 	</answer>
       </qandaentry>