When I initially created the Maltese (mt) keyboard layout it was based on gb(basic). Someone changed that to latin and some of the keyboard mappings became incorrect. 

Here is a diff of the changes needed to the mt symbol file to fix this:


--- mt.bak	2008-08-03 07:32:34.000000000 +0200
+++ mt	2008-08-03 07:39:13.000000000 +0200
@@ -12,6 +12,12 @@
 
     name[Group1]="Malta";
 
+    // Copied from GB layout
+    key <AE02>	{ [         2,   quotedbl,  twosuperior,    oneeighth ]	};
+    key <AE04>	{ [         4,     dollar,     EuroSign,   onequarter ]	};
+    key <AC11>	{ [apostrophe,         at, dead_circumflex, dead_caron]	};
+    key <BKSL>	{ [numbersign, asciitilde,   dead_grave,   dead_breve ]	};
+
     // The following four sets are the four additional letters, with the UK
     // equivalents
     key <TLDE>	{ [ cabovedot,  Cabovedot,        grave,      notsign ]	};