diff -u libgksu-2.0.5/debian/changelog libgksu-2.0.5/debian/changelog
--- libgksu-2.0.5/debian/changelog
+++ libgksu-2.0.5/debian/changelog
@@ -1,3 +1,11 @@
+libgksu (2.0.5-1ubuntu5.2) hardy-proposed; urgency=low
+
+  * debian/patches/21_increase_gksu_helper_buf.patch:
+    - increase the buffer in gksu-run-helper to fix breakage for
+      very long sn_ids (LP: #173757)
+
+ -- Michael Vogt <michael.vogt@ubuntu.com>  Mon, 09 Jun 2008 16:56:40 +0200
+
 libgksu (2.0.5-1ubuntu5.1) hardy-proposed; urgency=low
 
   * debian/patches/20_add_usleep.patch:
only in patch2:
unchanged:
--- libgksu-2.0.5.orig/debian/patches/21_increase_gksu_helper_buf.patch
+++ libgksu-2.0.5/debian/patches/21_increase_gksu_helper_buf.patch
@@ -0,0 +1,39 @@
+--- libgksu/gksu-run-helper.c	2008-06-04 10:41:44 +0000
++++ libgksu/gksu-run-helper.c	2008-06-09 14:53:01 +0000
+@@ -79,7 +79,7 @@
+   gchar *xauth_token = NULL;
+   gchar *sn_id = NULL;
+ 
+-  gchar buffer[255];
++  gchar *buffer[1024];
+ 
+   gint return_code;
+ 
+@@ -101,21 +101,21 @@
+   xauth_file = g_strdup_printf ("%s/.Xauthority",
+ 				xauth_dir);
+ 
+-  fgets (buffer, 255, stdin);
++  fgets (buffer, 1024, stdin);
+   strip (buffer);
+ 
+   /* strlen ("gksu-run: ") == 10, see su.c */
+   xauth_display = g_strdup_printf ("%s", buffer + 10);
+ 
+-  bzero (buffer, 255);
+-  fgets (buffer, 255, stdin);
++  bzero (buffer, 1024);
++  fgets (buffer, 1024, stdin);
+   strip (buffer);
+ 
+   sn_id = g_strdup_printf ("%s", buffer + 10);
+   setenv("DESKTOP_STARTUP_ID", sn_id, TRUE);
+ 
+-  bzero (buffer, 255);
+-  fgets (buffer, 255, stdin);
++  bzero (buffer, 1024);
++  fgets (buffer, 1024, stdin);
+   strip (buffer);
+ 
+   xauth_token = g_strdup_printf ("%s", buffer + 10);
+