There was a bug which prevented the linux client from participating in network games. Did that ever get fixed by any chance?
If not, do you thing Loki or whomever owns it would consider releasing the source code? I mean it's not like theres a lot of commercial viability left in D3 - everyone here has already bought it. And if there is anyone that may still buy it out of th $4.99 discount bin somewhere, having the source out isn't going to affect that anyway....
How about it guys? Release it and we promise we'll buy your next game at full retail....