keybindings broken under GNU screen

Hi,
I've setup the alt + arrow key binding for changing tab [1],
this stops working under GNU screen, while works correctly when I use
just
the terminal.
Could someone try this and report if this is a common issue?
Anyone has a suggestion on how to fix it?
I tried with no success to ask on the screen mailing list.
thanks,
kochab

ps I've tested this on the latest ubuntu and debian

[1] in .vimrc:
map <silent><A-Right> :tabnext<CR>
map <silent><A-Left> :tabprevious<CR>

--~--~---------~--~----~------------~-------~--~----~
You received this message from the "vim_use" maillist.
For more information, visit http://www.vim.org/maillist.php
-~----------~----~----~----~------~----~------~--~---