diff --git a/ChangeLog b/ChangeLog
index 964bc9b68..349947ef7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-02-16  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* Source/pathconfig/configure.ac: Warn if gnustep-config not found.
+	* Source/pathconfig/configure: regenerate
+	* Headers/Foundation/NSPointerArray.h: Add more comments.
+
 2009-02-15  Richard Frith-Macdonald <rfm@gnu.org>
 
 	* Source/NSPointerArray.m: Initial implementation.  Untested.
diff --git a/Headers/Foundation/NSPointerArray.h b/Headers/Foundation/NSPointerArray.h
index 12c825f5a..3c96feb9f 100644
--- a/Headers/Foundation/NSPointerArray.h
+++ b/Headers/Foundation/NSPointerArray.h
@@ -76,7 +76,12 @@ extern "C" {
 - (void) addPointer: (void*)pointer;
 
 /** Inserts an item at the specified index causing all higher indexed
- * items to be adjusted upwards.
+ * items to be adjusted upwards.<br />
+ * WARNING ... the Apple documented (and implemented in MacOS-X 10.5)
+ * behavior is to raise an exception if index is the same as the count of
+ * items in the array.  This is insane ... for arrays, data and strings you
+ * can insert at the end of an object to append to it, so the behavior of
+ * this class in MacOS is inconsistent and must be considered buggy.
  */
 - (void) insertPointer: (void*)pointer atIndex: (NSUInteger)index;
 
diff --git a/Source/pathconfig/configure b/Source/pathconfig/configure
index dc3b1bcc0..897ccbf0a 100755
--- a/Source/pathconfig/configure
+++ b/Source/pathconfig/configure
@@ -1715,16 +1715,23 @@ if test "$result" == "no"
 then
   # Check if gnustep-config supports the option
   # --installation-domain-for, and use it if available.  That option
-  # will automatically use the shell variable GNUSTEP_INSTALLATION_DOMAIN
-  # or the installation-domains.conf files (or the LOCAL default) as appropriate.
-  # Otherwise, if that option is not available just fall back to LOCAL.
+  # will automatically use the shell variable GNUSTEP_INSTALLATION_DOMAIN or
+  # the installation-domains.conf files (or the LOCAL default) as appropriate.
+  # Otherwise, if that option is not available just fall back to
+  # using GNUSTEP_INSTALLATION_DOMAIN or (if that was not defiend) LOCAL.
   if (gnustep-config --help | grep installation-domain) >&5 2>&5
   then
     result=`gnustep-config --installation-domain-for=gnustep-base 2>&5`
   else
-    # This case was added on December 2008 and is only for backwards
-    # compatibility with older versions of gnustep-make.
-    result=LOCAL
+    { echo "$as_me:$LINENO: WARNING: The 'gnustep-config' script was not found or out of date." >&5
+echo "$as_me: WARNING: The 'gnustep-config' script was not found or out of date." >&2;}
+    result=$GNUSTEP_INSTALLATION_DOMAIN
+    if test "$result" == ""
+    then
+      # This case was added on December 2008 and is only for backwards
+      # compatibility with older versions of gnustep-make.
+      result=LOCAL
+    fi
   fi
 fi
 case "$result" in
diff --git a/Source/pathconfig/configure.ac b/Source/pathconfig/configure.ac
index 0a330f9c8..100602f29 100644
--- a/Source/pathconfig/configure.ac
+++ b/Source/pathconfig/configure.ac
@@ -358,16 +358,22 @@ if test "$result" == "no"
 then
   # Check if gnustep-config supports the option
   # --installation-domain-for, and use it if available.  That option
-  # will automatically use the shell variable GNUSTEP_INSTALLATION_DOMAIN
-  # or the installation-domains.conf files (or the LOCAL default) as appropriate.
-  # Otherwise, if that option is not available just fall back to LOCAL.
+  # will automatically use the shell variable GNUSTEP_INSTALLATION_DOMAIN or
+  # the installation-domains.conf files (or the LOCAL default) as appropriate.
+  # Otherwise, if that option is not available just fall back to
+  # using GNUSTEP_INSTALLATION_DOMAIN or (if that was not defiend) LOCAL.
   if (gnustep-config --help | grep installation-domain) >&5 2>&5
   then
     result=`gnustep-config --installation-domain-for=gnustep-base 2>&5`
   else
-    # This case was added on December 2008 and is only for backwards
-    # compatibility with older versions of gnustep-make.
-    result=LOCAL
+    AC_MSG_WARN([The 'gnustep-config' script was not found or out of date.])
+    result=$GNUSTEP_INSTALLATION_DOMAIN
+    if test "$result" == ""
+    then
+      # This case was added on December 2008 and is only for backwards
+      # compatibility with older versions of gnustep-make.
+      result=LOCAL
+    fi
   fi
 fi
 case "$result" in