listactivity not responding to click

Hi All,
I have a ListActivity with a custom layout, but when i overload onListItemClick method, the code is not called. can anyone help?!

XML code for the list item's layout:

Code (Text):

1.  
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3.     android:orientation="horizontal"
4.     android:layout_width="fill_parent"
5.     android:layout_height="wrap_content"
6.     android:background="#ffffffff"
7.     >
8.     <TextView
9.     android:layout_width="wrap_content"
10.     android:layout_height="wrap_content"
11.     android:id="@android:id/text1"
12.     android:layout_weight="1"
13.     android:background="#ff000000"
14.     />
15.     <CheckBox
16.     android:layout_width="wrap_content"
17.     android:layout_height="wrap_content"
18.     android:id="@android:id/checkbox"
19.     android:layout_weight="0"
20.     />
21.    
22. </LinearLayout>
23.  

Java code:

Code (Text):

1. public class EditRecordsMenu extends ListActivity {
2.     @Override
3.     public void onCreate(Bundle savedInstanceState) {
4.         super.onCreate(savedInstanceState);
5.        
6.         Intent i = getIntent();
7.         if(i.getData() == null) {
8.             i.setData(CONTENT_URI);
9.         }
10.         Cursor c = managedQuery(getIntent().getData(), null, null, null, null);
11.         setListAdapter(new MyCursorAdapter(this,
12.                 R.layout.record_list_item,c,
13.                 new String[] {DATE},new int[] {android.R.id.text1}));
14.         getListView().setOnCreateContextMenuListener(this);
15.     }
16.  
17.     private class MyCursorAdapter extends SimpleCursorAdapter {
18.  
19.         public MyCursorAdapter(Context context, int layout, Cursor c,
20.                 String[] from, int[] to) {
21.             super(context, layout, c, from, to);
22.             setViewBinder(new MyViewBinder());
23.         }
24.         private class MyViewBinder implements ViewBinder
25.         {
26.             public boolean setViewValue(View view, Cursor cursor, int columnIndex)
27.             {
28.                 if(columnIndex==cursor.getColumnIndex(DATE)) {
29.                     String date = MileageData.getDateFormatter().format(cursor.getLong(columnIndex));
30.                     ((TextView)view).setText( date);
31.                     return true;
32.                 }
33.                 return false;
34.             }
35.  
36.         }
37.     }
38.  
39.     @Override
40.     protected void onListItemClick(ListView l, View v, int position, long id) {
41.         super.onListItemClick(l, v, position, id);
42.         Uri uri = ContentUris.withAppendedId(getIntent().getData(), id);
43.        
44.         String action = getIntent().getAction();
45.         if (Intent.ACTION_PICK.equals(action) || Intent.ACTION_GET_CONTENT.equals(action)) {
46.             // The caller is waiting for us to return a note selected by
47.             // the user.  The have clicked on one, so return it now.
48.             setResult(RESULT_OK, new Intent().setData(uri));
49.         } else {
50.             // Launch activity to view/edit the currently selected item
51.             startActivity(new Intent(Intent.ACTION_EDIT, uri));
52.         }
53.     }
54.  

Thanks!