Index: /trunk/src/org/openstreetmap/josm/actions/ZoomInAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/ZoomInAction.java	(revision 6709)
+++ /trunk/src/org/openstreetmap/josm/actions/ZoomInAction.java	(revision 6710)
@@ -34,4 +34,8 @@
                 Shortcut.registerShortcut("view:zoominbis", tr("View: {0}", tr("Zoom In")),
                     KeyEvent.VK_EQUALS, Shortcut.SHIFT));
+        // But on some systems (Belgian keyboard under Ubuntu) it seems not to work, so use also EQUALS
+        Main.registerActionShortcut(this,
+                Shortcut.registerShortcut("view:zoominter", tr("View: {0}", tr("Zoom In")),
+                    KeyEvent.VK_EQUALS, Shortcut.DIRECT));
         // make numpad + behave like +
         Main.registerActionShortcut(this,
Index: /trunk/src/org/openstreetmap/josm/gui/bbox/SlippyMapControler.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/bbox/SlippyMapControler.java	(revision 6709)
+++ /trunk/src/org/openstreetmap/josm/gui/bbox/SlippyMapControler.java	(revision 6710)
@@ -93,4 +93,5 @@
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_ADD, 0, false), "ZOOM_IN");
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_PLUS, 0, false), "ZOOM_IN");
+        inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_EQUALS, 0, false), "ZOOM_IN");
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_EQUALS, InputEvent.SHIFT_DOWN_MASK, false), "ZOOM_IN");
         inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, InputEvent.CTRL_DOWN_MASK, false), "ZOOM_OUT");