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/DialogProblemFilter.java
private Button warningButton;
        private Button infoButton;
        public SeverityGroup(Composite parent) {
            SelectionListener listener = new SelectionAdapter() {
                public void widgetSelected(SelectionEvent e) {
                    updateEnablement();
                    DialogProblemFilter.this.markDirty();
                }
            };
            enablementButton = new Button(parent, SWT.CHECK);
            GridData data = new GridData(GridData.FILL_HORIZONTAL);
            data.horizontalSpan = 2;
            enablementButton.setLayoutData(data);
            enablementButton.setFont(parent.getFont());
            enablementButton.setText(Messages
                    .getString("filtersDialog.severityLabel")); 
            enablementButton.addSelectionListener(listener);
            errorButton = new Button(parent, SWT.CHECK);
            errorButton.setFont(parent.getFont());
            errorButton.setText(Messages
                    .getString("filtersDialog.severityError")); 
            errorButton.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
            errorButton.addSelectionListener(selectionListener);
            warningButton = new Button(parent, SWT.CHECK);
            warningButton.setFont(parent.getFont());
            warningButton.setText(Messages
                    .getString("filtersDialog.severityWarning")); 
            warningButton.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
            warningButton.addSelectionListener(selectionListener);
            infoButton = new Button(parent, SWT.CHECK);