There were no multiple apps installed at any time. I made sure I deleted any previous ones before i loaded a new one. I think the biggest problem may have been that I connected the iPod to the laptop before I'd installed iTunes on the lappy that is having issues. Though i did a complete uninstall of the iPod and then installed iTunes V8 and then reconnnected the iPod. Worked with one lappy but not the other. At least I'm able to dance around the house while I'm doing the house work and I can have the music as loud as i like