Hi Frank, Don't believe the problem is 10.4.8. Currently using 10.4.9 with a PowerPC 1.67 GHz G4 powerbook. I have experienced similar problems using a Logitech USB Premium 350 headset with Skype. In stead of always going in and checking sound settings, found a quick reboot of the USB bus (just unplug the headset or better yet, change USB ports) when it didn't properly switch over the sound. Also found running the "echo123" Skype sound in/out test was helpful. The biggest problem with Skype for me is they no longer provide free North American calls. So... don't use it any more. Rod >Hello, I just purchased a usb Logitech premium headset to do skype. >They say it is recommended for the OSX 10.4.6 but maybe not beyond >that number. I have 10.4.8. I am experienceing a lot of >unpredictability on the part of this unit, & repeatedly have to redo >the sound preferences & the skype preferences, any time I either >shut down the account or remove the usb cable. Would of course >appreciate any experienced recommendations on how to deal with >this. I cant seem to predictibly get sound coming into the >earphones. It does appear that the microphone works, since I see >signs of sound being read in the output window of the preferences. >Also, I am using a titanium g4 PB with 1.5 gig RAM. Await your >opinions / suggestions. >Thx Frank Ettenberg >__