diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index c33598f6e24..541c723de2b 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,10 @@
+2010-02-22  Michael Albinus  <michael.albinus@gmx.de>
+
+	* net/tramp.el (tramp-do-copy-or-rename-file-out-of-band): Protect
+	setting the modes by `ignore-errors'.  It might fail, for example
+	if the file is not owned by the user but the group.
+	(tramp-handle-write-region): Ensure, that `tmpfile' is always readable.
+
 2010-02-21  Chong Yidong  <cyd@stupidchicken.com>
 
 	* files.el (directory-listing-before-filename-regexp): Use
diff --git a/lisp/net/tramp.el b/lisp/net/tramp.el
index eed5a41e46d..102117f82e9 100644
--- a/lisp/net/tramp.el
+++ b/lisp/net/tramp.el
@@ -3926,7 +3926,8 @@ The method used must be an out-of-band method."
 
 	;; Set the mode.
 	(unless (and keep-date copy-keep-date)
-	  (set-file-modes newname (tramp-default-file-modes filename))))
+	  (ignore-errors
+	    (set-file-modes newname (tramp-default-file-modes filename)))))
 
       ;; If the operation was `rename', delete the original file.
       (unless (eq op 'copy)
@@ -5031,7 +5032,10 @@ Returns a file name in `tramp-auto-save-directory' for autosaving this file."
 	  ;; filename does not exist (eq modes nil) it has been
 	  ;; renamed to the backup file.  This case `save-buffer'
 	  ;; handles permissions.
-	  (when modes (set-file-modes tmpfile modes))
+	  ;; Ensure, that it is still readable.
+	  (when modes
+	    (set-file-modes
+	     tmpfile (logior (or modes 0) (tramp-octal-to-decimal "0400"))))
 
 	  ;; This is a bit lengthy due to the different methods
 	  ;; possible for file transfer.  First, we check whether the