Hello, i have some problems start BB from usb key and don't know how to resolve
Keyboard language
I can't set italian keyboard.. i went to System / Language setting downloaded and changed it to Italian but the keyboard remain in English 
After reboot i can't see the downloaded language pack.. how does persisten mode works?
Network disconnection
I'am using wired network and a router - adsl modem but sometimes (each 3minutes) the network goes down and it restart working after some minutes
anyone can help me
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** pls check your keyboard layout in "BBMenu->Settings->Setting Manager->Keyboard" and verify if "Use system defaults" being selected, if so it is OK otherwise you have to click on that or select your proper (italian in your case) keyboard lang....
** You have not installed BB on your usb stick, it is like live cd/dvd, whatever changes you do it will be lost after rebooting, it will be restored to the original stage. Pls dig around internet for how persistence mode works, you will find plenty tutorials about.
** If you check the system logs i.e. dmesg and post here the logs related to the network issue we can help you, it might be hardware issue, pls try to give further details when you ask any question, we can't help you otherwise.
Ciao!