I am a new iMac and Mac user and purchased the iMac 24" 3.06 500Gb and 4Gb of RAM. There is one thing I wish the iMac had and that is more USB ports. The reason I say that is that I have two USB external hard drives a USB 2.0 Epson Scanner a USB Printer and a Wacom tablet. And that is leaving out my iPod and UPS which is USB. The problem arises after a fresh boot where some of the devices plugged into a powered hub are not found. So I have to do the USB dance and unplug and sometimes even move the USB cable to different positions. I don't know if it is something I am doing wrong or it is just another problem that can't be resolved. Is anyone else having this problem?