Fix inaccuracies in #12.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1801 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/FAQ.txt b/FAQ.txt
index ee7db4b..30fe012 100644
--- a/FAQ.txt
+++ b/FAQ.txt
@@ -211,8 +211,9 @@
      all.  Valgrind relies on the LD_PRELOAD, LD_LIBRARY_PATH and
      VG_ARGS variables.  Zeroing them will break things.
 
-     As of 1.9.6, Valgrind only uses these variables with 
-     --trace-children=yes, which should reduce the potential for
+     As of 1.9.6, Valgrind only uses these variables with
+     --trace-children=no, when executing execve() or using the
+     --stop-after=yes flag.  This should reduce the potential for
      problems.
 
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