ok ... I think to have found the mistake
the problem is not in faster application manager or in the maemo system apt

but why when we do an "apt-get update" we got this ?

Reading package lists... Done
W: Conflicting distribution: http://repository.maemo.org fremantle-1.3 Release (expected fremantle-1.3 but got )
W: You may want to run apt-get update to correct these problems

I have opened the files Releas for each repository and I have found this difference:

here the links and what the file Release contains for extras

http://repository.maemo.org/extras/d...-armel/Release
Archive: fremantle-1.3
Component: free
Origin: maemo
Label: Extras
Architecture: armel

http://repository.maemo.org/extras/d...-armel/Release
Archive: fremantle-1.3
Component: non-free
Origin: maemo
Label: Extras
Architecture: armel

NOTE THE "Archive: fremantle-1.3"

here the links and what the file Release contains for extras-testind and extras-devel

http://repository.maemo.org/extras-t...-armel/Release
http://repository.maemo.org/extras-t...-armel/Release
http://repository.maemo.org/extras-d...-armel/Release
http://repository.maemo.org/extras-d...-armel/Release

Archive: fremantle
Component: free
Origin: maemo
Label: Extras-testing
Architecture: armel

NOTE THE "Archive: fremantle" that is equal for all the 4 files

also I have realized that the file Packages have different size and date for each version fremantle, fremante-1.2 and fremantle-1.3

so I have just commit a bug to get-involved links

hope fix it soon ... wait please