Bad review keys behavior in words with accented characters

[Cleverson Casarin Uliana]

Dear, the numpad 4 and 6 keys doesn't read previous and next words as 
they should when such words contain accented characters, e.g., 
characters used in foreign languages, even though standard arrows make 
the synthesiser read such words and letters correctly. To reproduce the 
bug, open the nano editor and type the following portuguese words in 
sequence, then try to navigate with numpad 4, 5 and 6:
você água ética nações

I'm using ArchLinux kernel 3.0 lts, with locale set to pt_BR.utf8.

Thanks
Cleverson