Is it really a G4 overheating problem holding things up?
Well, I won't try to force my opinion on anyone (because it might be wrong, for one thing), but look what the problems the Pegasos-1 had with Articia. G4s became pointless before the April fix because they were a hell of random crashes, thanks to Articia. The description of the A1G4XE's problems are eerily similar.
