Add note about popen2 problem on Linux noticed by Pablo Bleyer.
diff --git a/README b/README
index 8b31ca1..c16a59a 100644
--- a/README
+++ b/README
@@ -193,6 +193,12 @@
to fail as well, so their removal is a good idea regardless of
how you configure python.
+ More recently, a problem with threads and fork() was tracked
+ down to a bug in the pthreads code in glibc version 2.0.5;
+ glibc version 2.0.7 solves the problem. This causes the
+ popen2 test to fail; problem and solution reported by Pablo
+ Bleyer.
+
Also under RedHat Linux 5.0, the crypt module now needs the
-lcrypt option. Uncomment this flag in Modules/Setup, or
comment out the crypt module in the same file.