[Samba] [homes] auth in Ubuntu 9.10

[Toro]

I create a [homes] share in my server (Debian lenny).
All work fine in the MS Windows XP clients, but, i have two pc's whit ubuntu
9.10, and when I try to acces to the *homes* share I get the error:

"Could not load the windows share" (or something like that, the errors
appears in spanish)

The client have installed the samba-client, and i don't know why this
happens...

¿Any idea? ¿some lost package in clients?, ¿a bug of the 9.10?