The Zaurus is clearly an accidental OSS hacker target : Sharp designed it as a closed platform, tailored for the japanese domestic market. They never sold it abroad, or claimed it was good for anything else than its intended use (a glorified dictionary, basically). The fact that hackers jumped through hoops to lay their hands on one because it was the first Linux PDA, and a good one, is incidental, and its shortcomings in this regard perceived by said hackers cannot be blamed on Sharp. Mostly.