I can play GW flawlessly on Daryna, with a simple (stupid) method I found.
1- I dual-boot Daryna and Win XP; GW is installed (and updated) on the XP partition
2- I installed Wine-doors in Daryna via the Software Portal
3- Out of curiosity, I right-clicked on the gw.exe file from Daryna, and chose "Open with Wine"...
4- The GW launcher started, loaded something and the GW icon greeted me in Daryna's desktop
5- I clicked on it... and GW started in full-screen, already updated and configured (without anti-aliasing), and I played it withouth a glitch!
6- I have to mention that I had to disable Compiz effects, otherwise the GNOME panels would be present even with full-screen GW
7- Also, anti-aliasing can not be activated (and I hear that there is no solution), and framerate is slower than in XP (but perfectly playable anyway).
That's it. I don't know if I was lucky or what, but anyway I am very impressed with Wine. I think that Cedega is now not worth time nor money...