Fill in the benchmark figures, bogus or not; add a disclaimer
diff --git a/Doc/whatsnew/whatsnew24.tex b/Doc/whatsnew/whatsnew24.tex
index b61ab47..83db0c4 100644
--- a/Doc/whatsnew/whatsnew24.tex
+++ b/Doc/whatsnew/whatsnew24.tex
@@ -1079,7 +1079,6 @@
\end{itemize}
-% XXX fill in these figures
% pystone is almost useless for comparing different versions of Python;
% instead, it excels at predicting relative Python performance on
% different machines.
@@ -1089,8 +1088,10 @@
% and 2.4.
The net result of the 2.4 optimizations is that Python 2.4 runs the
-pystone benchmark around XX\% faster than Python 2.3 and YY\% faster
-than Python 2.2.
+pystone benchmark around 5\% faster than Python 2.3 and 35\% faster
+than Python 2.2. (pystone is not a particularly good benchmark, but
+it's the most commonly used measurement of Python's performance. Your
+own applications may show greater or smaller benefits from Python~2.4.)
%======================================================================