Season Episodes Season Premiere Season Finale
1 20 March 4, 2006 May 13, 2006
2 52 October 7, 2006 July 16, 2007
3 44 October 15, 2007 June 2, 2008
4 48 October 13, 2008 May 11, 2009
5 40 October 12, 2009 June 14, 2010
6 20 September 6, 2010 December 6, 2010
7 8 October 29, 2013 December 17, 2013