This is one of the issues that HiMedia did not fix yet. I think @Futeko notified them. A partial solution is to install a different keyboard app (I use Swype on my other Androids) and to use this keyboard. It will show onscreen, but I think it can be made to disappear and you can type with the physical keyboard. I am still on 2.0.1 firmware, I am waiting for a newer firmware than 2.0.3, that is too buggy for my taste.