Palm has released an update for the Tungsten C handheld on its support website. The software update addresses issues involving a MAC address bug, clicking noises and various WiFi related compatibility issues. [PalmInfocenter]
Palm gives you a simple way to test if this is necessary / recommended (it was for me) and a PRC file to download. The process DELETES EVERYTHING as part of the deal… Be prepared to re-build. Not the end of the world, but certainly important to consider.