I had this problem on Gutsy and now Hardy, and I can't find a relevent thread so thought I would start a new one.
I have a Fujitsu-Siemens Amilio laptop running Hardy. When I plug my USB mouse in to one of the ports it powers up but does not get recognised. The usb ports on the laptop all work ok for other devices eg external usb hard disk and usb pen drive.
I know the mouse is OK because I have a second laptop for work running XP SP2 and it works fine with this laptop.
I am not sure if this is a power issue for the mouse or if it needs some updated drivers.
Has anyone seen this issue, and have any ideas on what I need to do to resolve it?