By QWhen Australia's 2006-07 season started there was a lot of media speculation about it being the last season for a number of the senior players.McGrath, Warne, Hayden, Martyn, Langer, Gilchrist were well past their 30s but all denied that retirement was anywhere on the horizon.But as the Ashes in Australia came to an end that season, 4 of these seniors had hung up their boots.However, their announcements had came at different times.While McGrath had announced his retirement before the se