Bug 69424 TVT3.0: Multiple Mnemonics in Tasks -> Filters
From the main Workbench view, click the Task menu (drop down arrow) and select Filters. There are duplicated mnemonics for (D). See the attached screenshot.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/DialogMarkerFilter.java
anyResourceInSameProjectButton.setEnabled(isFilterEnabled());
        selectedResourceButton.setEnabled(isFilterEnabled());
        selectedResourceAndChildrenButton.setEnabled(isFilterEnabled());
        workingSetGroup.setEnabled(isFilterEnabled());
    }
    /**
     * Updates the given filter from the UI state.
     */
    protected void updateFilterFromUI() {
        filter.setEnabled(filterEnabledButton.getSelection());
        filter.setSelectedTypes(getSelectedTypes());
        if (selectedResourceButton.getSelection())
            filter.setOnResource(MarkerFilter.ON_SELECTED_RESOURCE_ONLY);
        else if (selectedResourceAndChildrenButton.getSelection())
            filter
                    .setOnResource(MarkerFilter.ON_SELECTED_RESOURCE_AND_CHILDREN);
        else if (anyResourceInSameProjectButton.getSelection())
            filter.setOnResource(MarkerFilter.ON_ANY_RESOURCE_OF_SAME_PROJECT);
        else if (workingSetGroup.getSelection())
            filter.setOnResource(MarkerFilter.ON_WORKING_SET);
        else
            filter.setOnResource(MarkerFilter.ON_ANY_RESOURCE);
        filter.setWorkingSet(workingSetGroup.getWorkingSet());
        int markerLimit = MarkerFilter.DEFAULT_MARKER_LIMIT;
        try {
            markerLimit = Integer.parseInt(this.markerLimit.getText());
        } catch (NumberFormatException e) {
        }
        filter.setMarkerLimit(markerLimit);
        filter.setFilterOnMarkerLimit(filterOnMarkerLimit.getSelection());