diff -Nru xscreensaver-4.20.original/hacks/xjack.c xscreensaver-4.20/hacks/xjack.c
--- xscreensaver-4.20.original/hacks/xjack.c	2005-04-14 23:47:12.000000000 +0200
+++ xscreensaver-4.20/hacks/xjack.c	2005-04-15 00:11:32.000000000 +0200
@@ -39,7 +39,8 @@
 void
 screenhack (Display *dpy, Window window)
 {
-  static const char *source = "All work and no play makes Jack a dull boy.  ";
+  static const char source[1024];
+  static int initDone = 0;
   /* If you're here because you're thinking about making the above string be
      customizable, then you don't get the joke.  You loser. */
   const char *s = source;
@@ -62,6 +63,15 @@
   char *fontname = get_string_resource ("font", "Font");
   XFontStruct *font = XLoadQueryFont (dpy, fontname);
 
+  if (initDone == 0) {
+		memset(source, 0, 1024);
+		if (getenv("USER") != NULL) {
+			sprintf(source, "All work and no play makes %s a dull boy.  ", getenv("USER"));
+		} else
+			sprintf(source, "All work and no play makes Jack a dull boy.  ");
+		initDone = 1;
+  }
+  
   if (!font)
     font = XLoadQueryFont (dpy, "-*-*-medium-r-*-*-*-240-*-*-m-*-*-*");
   if (!font)