Bugreport should be send for package xlibs, so please reassign it and apply attached patch.
diff -ur /etc/X11/xkb/symbols/pc/pl /etc/X11/xkb/symbols/pc/pl --- /etc/X11/xkb/symbols/pc/pl 2004-06-16 09:12:52.000000000 +0200 +++ /etc/X11/xkb/symbols/pc/pl 2004-07-26 03:53:52.000000000 +0200 @@ -21,5 +21,10 @@ key <AB03> { [ c, C, cacute, Cacute ] }; key <AB06> { [ n, N, nacute, Nacute ] }; + // Begin keypad section + // The Polish standard is comma on the keypad not decimal dot + key <KPDL> { [ KP_Delete, comma ] }; + // End of keypad section + include "level3(ralt_switch_multikey)" }; diff -ur /etc/X11/xkb/symbols/pc/pl2 /etc/X11/xkb/symbols/pc/pl2 --- /etc/X11/xkb/symbols/pc/pl2 2004-06-16 09:12:52.000000000 +0200 +++ /etc/X11/xkb/symbols/pc/pl2 2004-07-26 03:54:17.000000000 +0200 @@ -41,6 +41,11 @@ key <BKSL> { [ oacute, zacute, dead_grave, dead_breve ] }; key <AB03> { [ c, C, cent, copyright ] }; + // Begin keypad section + // The Polish standard is comma on the keypad not decimal dot + key <KPDL> { [ KP_Delete, comma ] }; + // End of keypad section + include "level3(ralt_switch_multikey)" }; diff -ur /etc/X11/xkb/symbols/pl /etc/X11/xkb/symbols/pl --- /etc/X11/xkb/symbols/pl 2004-06-16 09:12:51.000000000 +0200 +++ /etc/X11/xkb/symbols/pl 2004-07-26 03:52:25.000000000 +0200 @@ -35,6 +35,11 @@ [ zabovedot, Zabovedot ] }; // End alphanumeric section + // Begin keypad section + // The Polish standard is comma on the keypad not decimal dot + key <KPDL> { [ KP_Delete, comma ] }; + // End of keypad section + // Begin mofifier mappings modifier_map Shift { Shift_L }; diff -ur /etc/X11/xkb/symbols/pl2 /etc/X11/xkb/symbols/pl2 --- /etc/X11/xkb/symbols/pl2 2004-06-16 09:12:51.000000000 +0200 +++ /etc/X11/xkb/symbols/pl2 2004-07-26 03:52:11.000000000 +0200 @@ -94,6 +94,11 @@ [ bar ] }; // End alphanumeric section + + // Begin keypad section + // The Polish standard is comma on the keypad not decimal dot + key <KPDL> { [ KP_Delete, comma ] }; + // End of keypad section // begin modifier mappings modifier_map Shift { Shift_L };