After I installed FC3, when I am at the Gnome login prompt, I cannot entre my userId and my password because my keyboard and my mouse are inactive. If I wait a few minutes (3 or 4), my keyboard and my mouse become again active. After login, in Gnome no problem with the keyboard and the mouse.
I did not have this problem with this keyboard and this mouse in Fedora Core 2.
In dmesg I have several lines like this : usb 6-2.2: control timeout on ep0in