sporadic netui bvt failure related to CheckBoxGroup

[Rich Feit]

Hi all,

I'm seeing a sporadic failure of the 'B39552' test when running 'ant 
bvt' under netui.  Here is the diff between recorded/playback results:

   R: <input type="hidden" name="wlw-checkbox_group_key:{actionForm.selectedItems}OldValue" value="true"><input 
type="checkbox" name="wlw-checkbox_group_key:{actionForm.selectedItems}" value="1" checked><span>Option 1</span><br>
*    P:* <input type="hidden" name="wlw-checkbox_group_key:{actionForm.selectedItems}OldValue" value="true"><input 
type="checkbox" name="wlw-checkbox_group_key:{actionForm.selectedItems}" value="1"><span>Option 1</span><br>

In looking at 
netui/src/tags-html/org/apache/beehive/netui/tags/html/CheckBoxGroup.java, 
I'm wondering if the following member variables should be nulled out 
during localRelease():
   _state (nulled out or call clear())
  _hiddenState (nulled out or call clear())
  _writer

Seems like they should, but I know this is tricky code.  Anyone have 
insight into this?

Thanks,
Rich