What sound controller do you have? If it is SigmaTel C-Major, then you are not the only one having similar problems:


http://forums.us.dell.com/supportforums/board/message?board.id=latit_audio&message.id=5594



http://forums.us.dell.com/supportforums/board/message?board.id=latit_audio&message.id=5107



http://forums.us.dell.com/supportforums/board/message?board.id=latit_audio&message.id=5594


I called today to my local Dell support and asked about the matter, but they couldn't tell what could be the reason. Nor did they could tell if it is even possible to record (or monitor) line level signal from the audio/mic input of Latitude+SigmaTel.