I don't think any lenders could be as bad as Wizard. Currently Wizard are reviewing their rates with an expected announcement by 19/2/09.
On December 2 2008, the RBA announced 1% cut. Wizard didn't change their rate until the 30/12/08. And then they only cut by 0.9%.
Pretty much the same case in November. RBA announced 0.75% cut on 4/11, Wizard rates changed for existing customers on 27/11/08.
October was different for Wizard. RBA cut by 1% on 7/10. Wizard rates changed on the 16/10/08, down 0.8% along with most other banks (i think).