diff -urN -X /tmp/dontdiff linux-2.4.20/Documentation/Configure.help /usr/src/linux/Documentation/Configure.help
--- linux-2.4.20/Documentation/Configure.help	Fri Nov 29 00:53:08 2002
+++ /usr/src/linux/Documentation/Configure.help	Thu May  1 02:12:04 2003
@@ -17752,6 +17752,16 @@
   <ftp://gnu.systemy.it/pub/gpm/>) solves this problem, or you can get
   the "mconv2" utility from <ftp://ibiblio.org/pub/Linux/system/mouse/>.
 
+Disable trackpad while typing
+CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+  For people with a notebook that have a build in trackpad.
+
+  It prevents unintended mouse moves and mouse taps while typing on
+  the notebook keyboard.
+
+  The majority of notebooks on the market have a PS/2 trackpad. 
+  So you will probably say "Y" if you have a notebook with a trackpad.
+
 C&T 82C710 mouse port support (as on TI Travelmate)
 CONFIG_82C710_MOUSE
   This is a certain kind of PS/2 mouse used on the TI Travelmate. If
diff -urN -X /tmp/dontdiff linux-2.4.20/drivers/char/Config.in /usr/src/linux/drivers/char/Config.in
--- linux-2.4.20/drivers/char/Config.in	Fri Nov 29 00:53:12 2002
+++ /usr/src/linux/drivers/char/Config.in	Thu May  1 02:30:45 2003
@@ -170,6 +170,13 @@
 tristate 'Mouse Support (not serial and bus mice)' CONFIG_MOUSE
 if [ "$CONFIG_MOUSE" != "n" ]; then
    bool '  PS/2 mouse (aka "auxiliary device") support' CONFIG_PSMOUSE
+
+   if [ "$CONFIG_PSMOUSE" = "y" ]
+   then
+     bool '    Disable Trackpad while typing on Notebooks' CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+   fi
+
+
    tristate '  C&T 82C710 mouse port support (as on TI Travelmate)' CONFIG_82C710_MOUSE
    tristate '  PC110 digitizer pad support' CONFIG_PC110_PAD
    tristate '  MK712 touch screen support' CONFIG_MK712_MOUSE
diff -urN -X /tmp/dontdiff linux-2.4.20/drivers/char/pc_keyb.c /usr/src/linux/drivers/char/pc_keyb.c
--- linux-2.4.20/drivers/char/pc_keyb.c	Fri Nov 29 00:53:12 2002
+++ /usr/src/linux/drivers/char/pc_keyb.c	Thu May  1 02:30:45 2003
@@ -13,6 +13,11 @@
  * Code fixes to handle mouse ACKs properly.
  * C. Scott Ananian <cananian@alumni.princeton.edu> 1999-01-29.
  *
+ * Implemented the "disable trackpad while typing" feature. This prevents
+ * unintended mouse moves and mouse taps while typing on the keyboard on
+ * notebooks with a PS/2 trackpad.
+ * Hans-Georg Thien <1682-600@onlinehome.de> 2003-04-30.
+ *
  */
 
 #include <linux/config.h>
@@ -85,6 +90,10 @@
 /*
  *	PS/2 Auxiliary Device
  */
+#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+static int disable_trackpad_while_typing=0;
+static int trackpad_delay=HZ;  /* delay trackpad for 1Sec after a key-event */
+#endif
 
 static int __init psaux_init(void);
 
@@ -449,6 +458,10 @@
 		return;
 	}
 
+#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+        if(disable_trackpad_while_typing > 0) return;
+#endif
+
 	prev_code = scancode;
 	add_mouse_randomness(scancode);
 	if (aux_count) {
@@ -467,8 +480,42 @@
 
 static unsigned char kbd_exists = 1;
 
+#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+
+void enable_trackpad(unsigned long ptr)
+{
+        disable_trackpad_while_typing=0; /* re-enable trackpad */
+}
+
+#endif
+
 static inline void handle_keyboard_event(unsigned char scancode)
 {
+
+#ifdef CONFIG_DISABLE_TRACKPAD_WHILE_TYPING
+
+        /* setup a timer to re-enable the trackpad */
+        static struct timer_list enable_trackpad_timer;
+        static int enable_trackpad_timer_initialized=0;
+
+        disable_trackpad_while_typing=1; /* disable trackpad */
+
+        if(enable_trackpad_timer_initialized)
+        {
+                 /* trackpad timer already exists, - just restart it */
+                 mod_timer(&enable_trackpad_timer, jiffies+trackpad_delay);
+        }
+        else
+        {
+                 /* no trackpad timer yet. Initialize and start it */
+                 init_timer(&enable_trackpad_timer);
+                 enable_trackpad_timer.expires=jiffies+trackpad_delay;
+                 enable_trackpad_timer.function=enable_trackpad;
+                 add_timer(&enable_trackpad_timer);
+                 enable_trackpad_timer_initialized=1;
+        }
+#endif
+
 #ifdef CONFIG_VT
 	kbd_exists = 1;
 	if (do_acknowledge(scancode))