I have Debian installed on my Kurobox for some months now, and am quite happy with it (it’s on the harddisk, not in the flash, the flash contains just a boot loader and an emergency system).
Since I do install nightlies through compiling, I had to set up the development environment. Either on the Kurobox- or Terastation-Wiki there’s a list somewhere of what is usually needed. I must really say that it was much less things to deal with than anticipated (even though I did compile with ogg, flac and musepack support). In case of problems, use apt-cache search often to find the missing packages 😀