I have a Mac Mini (1.42 G4) using 10.4.11 (so it is several years old). The sound coming out of the internal speakers was ok but I decided to use headphones, which I haven't done in a while. Despite plugging in headphones (and trying some external speakers that worked before), the sound still comes out of the internal speakers. Checked the Sound in System Preferences and only the internal speakers are listed. After reading on some forums, I decided to zap the PRAM. Now not only do the headphones and external speakers not work, but the internal ones are faint even at full volume. One additional thing that might be just a coincidence, the wireless internet connection is also very slow and prone to drop the connection. I have a new iMac which has none of the wireless problems despite being in the same room as the Mac Mini. Any thoughts or suggestions?