If you go onto the easyJet website and click on the logo which states "Winter 2010/11 flights for sale" it brings up a list of available routes from each U.K base except Newcastle.
For Luton it states all routes are available for sale until 26-Mar-11 except
Alicante - ends 1 Nov 10
Krakow - ends 2 Nov 10
Nice - ends 2 Nov 10
Paphos - ends 3 Nov 10
Palma - ends 1 Nov 10
Maybe they are making these just seasonal routes?