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
infoButton.setFont(parent.getFont());
            infoButton
                    .setText(Messages.getString("filtersDialog.severityInfo")); 
            infoButton.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
            infoButton.addSelectionListener(selectionListener);
        }
        public boolean isEnabled() {
            return enablementButton.getSelection();
        }
        public void setEnabled(boolean enabled) {
            enablementButton.setSelection(enabled);
        }
        public boolean isErrorSelected() {
            return errorButton.getSelection();
        }
        public void setErrorSelected(boolean selected) {
            errorButton.setSelection(selected);
        }
        public boolean isWarningSelected() {
            return warningButton.getSelection();
        }
        public void setWarningSelected(boolean selected) {
            warningButton.setSelection(selected);
        }
        public boolean isInfoSelected() {
            return infoButton.getSelection();
        }
        public void setInfoSelected(boolean selected) {
            infoButton.setSelection(selected);
        }