So I downloaded Pacifist to install Quicktime 7.2 over 7.3 so I could listen to an important audio file I had recorded on Qualcomm Purevoice. After doing so, the sound, internet, and battery icons on the top righthand corner of my system tray are gone. Along with this, anything that plays sound will automatically crash. When I click on my iTunes icon it wont start up, it will just crash. My Quicktime wont even start up. If I push the volume up or down buttons on my keyboard the whole screen will go blue I've tried downloading and reinstalling both iTunes and Quicktime, and looked for new software updates but still no luck. This really really sucks as I cant do anything with audio, I cant see my internet/wifi icon, and my whole iBook is just running really slow. Please help!