Hi all, I have a 3G AM2 quad core CPU... x86_64 centos 5.3 When I am doing backing up to my external USB drive my system becomes sluggish. Clicking on a thunderbird compose takes some time to pop up the window. Typeing doesnt keep up etc... Is there something I can change so this backup doesnt slow my system down so much? I dont see HOW it can be taking so much CPU. top at times shows 0 idle or 11% idle from a USB backup. Thanks for any suggestions. Jerry