Update random test description because it fails less frequently now.

doc/src/sgml/regress.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/regress.sgml,v 1.37 2003/11/29 19:51:37 pgsql Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/regress.sgml,v 1.38 2004/03/15 16:06:43 momjian Exp $ -->
 
  <chapter id="regress">
   <title id="regress-title">Regression Tests</title>
@@ -334,17 +334,13 @@ exclusion of those that don't.
     <para>
      There is at least one case in the <literal>random</literal> test
      script that is intended to produce random results. This causes
-     random to fail the regression test once in a while (perhaps once
-     in every five to ten trials).  Typing
+     random to fail the regression test occasionally.  Typing
 <programlisting>
 diff results/random.out expected/random.out
 </programlisting>
      should produce only one or a few lines of differences.  You need
      not worry unless the random test always fails in repeated
-     attempts.  (On the other hand, if the random test is
-     <emphasis>never</emphasis> reported to fail even in many trials
-     of the regression tests, you probably <emphasis>should</emphasis>
-     worry.)
+     attempts.
     </para>
    </sect2>
   </sect1>