USB 2.0 problem

[Fritz-the-Cat]

Sorry to bother you. Device manager tells me that I have The following USB devices:
Generic USB Hub
USB Composite Device
USB Printing Support
USB Root Hub
USB Root Hub
USB Root Hub
USB Root Hub
VIA Rev 5 or later USB Universal Host Controller
VIA Rev 5 or later USB Universal Host Controller
VIA Rev 5 or later USB Universal Host Controller
Via USB 2.0 Enhanced Host Controller

Yet whenever I plug in a 2.0 compliant accessory, I get the "could be faster" message. Any suggestions?

Thanks