The first two aren't "desktop" problems, they are "putting a 3rd party OS onto hardware intended for another OS" problems. (Think about putting Android onto an iPhone, or ddwrt onto an Airport for comparison).

And even then I think they're all mostly issues from the wanting to be 100% open source to get the full benefits angle, rather than the "it's just not working/non-existant" kind of problems that they might have been just a few short years ago.