Hey everyone. Just today I noticed that I cannot control my volume at all. The pull down sound icon on the menu bar cannot be adjusted. I cannot use the keyboard to change volume. All I can do is mute it. Also, in the system preferences under the "sound" icon I cannot change the volume. It appears to be greyed (spelling) out. Any ideas on what might have caused this and how to fix it? I've tried restarting and I'm running the latest version of Tiger. Thanks.