For those of you using the Canadian Multilingual the 'ù' and the '/' are inverted. To fix this you have to invert the TLDE and the LSGT keys.

Here is a quick patch :

--- /etc/X11/xkb/symbols/ca.orig        2008-03-18 22:54:28.000000000 -0400
+++ /etc/X11/xkb/symbols/ca     2008-03-18 22:55:08.000000000 -0400
@@ -335,7 +335,7 @@
     name[Group1] = "Canada - Multilingual";
 
     key.type[group1]="EIGHT_LEVEL_SEMIALPHABETIC";
-    key <TLDE> { [     slash,  backslash,            bar, NoSymbol,
+    key <LSGT> { [     slash,  backslash,            bar, NoSymbol,
                   NoSymbol,     hyphen ]       };
     key <AE01> { [         1,     exclam,      plusminus, NoSymbol,
                  onesuperior, exclamdown ]     };
@@ -420,7 +420,7 @@
     key <BKSL> { [    agrave,         Agrave,     braceright, NoSymbol,
                   NoSymbol,  dead_breve ]      };
 
-    key <LSGT> { [    ugrave,     Ugrave,         degree, NoSymbol,
+    key <TLDE> { [    ugrave,     Ugrave,         degree, NoSymbol,
                   NoSymbol,   brokenbar ]      };
 
     key.type[group1]="FOUR_LEVEL_SEMIALPHABETIC";