Version details: 2.6
Distribution/Version: Debian Sid

1. Create a listStore with a model that contains a Text and Object DataColumn
2. Execute the code below

Expected result would be that the second System.out.println would also output
the String returned by toString() inside `obj`. Instead, it does not :-)

	/**
	 * Insert value into list
	 * 
	 * @param obj
	 */
	public void add(Object obj) {
		System.out.println("Adding: " + obj);
		
		TreeIter iter = model.appendRow();
		model.setValue(iter, lbColumns.text, obj.toString());
		model.setValue(iter, lbColumns.object, obj);
		
		System.out.println("Adding object to model:" + model.getValue(iter,
lbColumns.object) + "/" + model);
		
	}

Execution of this method yields the following result: 

Adding: objecttoStringOutput
Adding object to model: null / org.gnu.gtk.ListStore@1f20eeb