lucid to maverick

[kosaidpo]

hello people : )

i've upgraded my ubuntu to maverick  from lucid and i get some trouble
when i try to do

sudo aptitutde update

i got this


N: Ignoring file 'lubuntu-desktop-ppa-maverick.list.distUpgrade' in
directory '/etc/apt/sources.list.d/' as it has an invalid filename
extension
N: Ignoring file 'lubuntu-desktop-ppa-maverick.list.save' in directory
'/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'lubuntu-desktop-ppa-maverick.list.distUpgrade' in
directory '/etc/apt/sources.list.d/' as it has an invalid filename
extension
N: Ignoring file 'lubuntu-desktop-ppa-maverick.list.save' in directory
'/etc/apt/sources.list.d/' as it has an invalid filename extension

any idea how to fix this and idont kno what extention its talkin about

kosaidpo

regards .