After upgrading my powerbook G4 from X.2.8 to X.3.4, I lost both my internal modem and airport wireless. Under network in the sysetm preferences, I could see them, but they were grayed out and I couldn't access them. Then if I tried to connect using my modem, I got an error message saying that the device could not be found. Any ideas on a fix other than downgrading back to X.2.8? Thanks for the help.