--- a/PROBLEMS	Mon Aug 13 10:30:38 2007 +0200
+++ b/PROBLEMS	Mon Aug 13 10:31:29 2007 +0200
@@ -1,11 +1,12 @@
--*- mode:outline -*-
+                                                  -*- mode:outline -*-
+
 This file describes various problems that have been encountered
 in compiling, installing and running XEmacs.  It has been updated for
 XEmacs 21.0.
 
-This file is large, but we have tried to sort the entries by their
-respective relevance for XEmacs, but may have not succeeded completely
-in that task.  The file is divided into four parts:
+This file is rather large, but we have tried to sort the entries by
+their respective relevance for XEmacs, but may have not succeeded
+completely in that task.  The file is divided into four parts:
 
  - Problems with building XEmacs
  - Problems with running XEmacs
@@ -167,7 +168,7 @@
 new versions of the compiler should run fine.
 
 ** On HPUX, the HP C compiler might have a problem compiling some files
-   with optimization.
+with optimization.
 
 Richard Cognot <cognot@ensg.u-nancy.fr> writes:
 
@@ -185,6 +186,19 @@
 You can get these standard X tools by anonymous FTP to hpcvaaz.cv.hp.com.
 Essentially all X programs need these.
 
+** On HP-UX, problems with make
+
+Marcus Thiessel <marcus_thiessel@hp.com>
+
+  Some releases of XEmacs require GNU make to build successfully.
+
+** On HP-UX 9.05 XEmacs won't compile or coredump during the build.
+
+Marcus Thiessel <marcus_thiessel@hp.com>
+
+  This might be a sed problem. For your own safety make sure to use
+  GNU sed while dumping XEmacs.
+
 ** Solaris 2.3 /bin/sh coredumps during configuration.
 
 This only occurs if you have LANG != C.  This is a known bug with
@@ -485,13 +499,18 @@
 mode of the installed copy; changing the group and mode of the build
 directory copy is ineffective.
 
-** XEmacs crashes on Digital Unix when dealing with large compilation
-buffers.
+** XEmacs crashes on Digital Unix within font-lock, or when dealing
+with large compilation buffers.
 
-This is a known problem with the regexp code, that uses alloca
-extensively, and overflows the stack in case of complex regexp
-matches.  As a workaround, you can recompile with REGEX_MALLOC
-defined.
+The default stack size under Digital Unix is rather small (2M as
+opposed to Solaris 8M), hosing the regexp code, which uses alloca()
+extensively, overflowing the stack when complex regexps are used.
+Workarounds:
+
+1) Increase your stack size, using `ulimit -s 8192' or a (t)csh
+   equivalent;
+
+2) Recompile regex.c with REGEX_MALLOC defined.
 
 ** On Solaris, C-x doesn't get through to Emacs when you use the console.
 
@@ -1362,7 +1381,7 @@
 funding, and all work is done by volunteers.  If you think you can
 help, please contact the XEmacs maintainers.
 
-** XEmacs/Mule doesn't work on a tty.
+** XEmacs/Mule doesn't support TTY's satisfactorily.
 
 This is a major problem, which we plan to address in a future release
 of XEmacs.  Basically, XEmacs should have primitives to be told