Well, the Showcase sample uses new CheckboxCell(true, false) for a selection
cell, so maybe you could make it work?
http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable
It uses DefaultSelectionEventManager.createCheckboxManager() to handle
selection instead of a FieldUpdater, as that
After upgrading from GWT 2.1.0 to 2.1.1, a web page
rendered using CellTable becomes frozen when a CheckboxCell is
clicked. This only happens in production mode and the browsers tested
include FireFox 3.6, Internet Exploer 8 and 10.0.648.204. In
development mode, the upgrade does not