After applying this patch you must purge the pre-processed keyboard mappings
by running "rm -vf /var/lib/xkb/*.xkm" as root!

Note: It's also possible to mangle the loaded keyboard mapping using xmodmap.
See e.g. http://www.cl.cam.ac.uk/~mgk25/unicode.html#input for details on this.

--- /usr/share/X11/xkb/symbols/us	2011-02-16 11:16:39.000000000 +0100
+++ /usr/share/X11/xkb/symbols/us	2011-02-16 11:16:45.000000000 +0100
@@ -22,12 +22,12 @@
     key <AE08> {	[	  8,	asterisk	]	};
     key <AE09> {	[	  9,	parenleft	]	};
     key <AE10> {	[	  0,	parenright	]	};
-    key <AE11> {	[     minus,	underscore	]	};
+    key <AE11> {	[     minus,	underscore,	ssharp]	};
     key <AE12> {	[     equal,	plus		]	};
 
     key <AD01> {	[	  q,	Q 		]	};
     key <AD02> {	[	  w,	W		]	};
-    key <AD03> {	[	  e,	E		]	};
+    key <AD03> {	[	  e,	E,		EuroSign,	cent]	};
     key <AD04> {	[	  r,	R		]	};
     key <AD05> {	[	  t,	T		]	};
     key <AD06> {	[	  y,	Y		]	};
@@ -35,7 +35,7 @@
     key <AD08> {	[	  i,	I		]	};
     key <AD09> {	[	  o,	O		]	};
     key <AD10> {	[	  p,	P		]	};
-    key <AD11> {	[ bracketleft,	braceleft	]	};
+    key <AD11> {	[ bracketleft,	braceleft,	udiaeresis,	Udiaeresis]	};
     key <AD12> {	[ bracketright,	braceright	]	};
 
     key <AC01> {	[	  a,	A 		]	};
@@ -47,8 +47,8 @@
     key <AC07> {	[	  j,	J		]	};
     key <AC08> {	[	  k,	K		]	};
     key <AC09> {	[	  l,	L		]	};
-    key <AC10> {	[ semicolon,	colon		]	};
-    key <AC11> {	[ apostrophe,	quotedbl	]	};
+    key <AC10> {	[ semicolon,	colon,		odiaeresis,	Odiaeresis]	};
+    key <AC11> {	[ apostrophe,	quotedbl,	adiaeresis,	Adiaeresis]	};
 
     key <AB01> {	[	  z,	Z 		]	};
     key <AB02> {	[	  x,	X		]	};
@@ -63,6 +63,7 @@
 
     key <BKSL> {	[ backslash,         bar	]	};
     // End alphanumeric section
+    include "level3(ralt_switch)"
 };
 
 partial alphanumeric_keys