hi all - my pc has been doing this for a while, but it's starting to annoy me. i have several devices hooked up to my usb 2.0 (powered) hub. on occasion, my pc will randomly disconnect these devices. then try to reconnect. then later disconnect again, etc. i'm sure it's *not* my hub as the same thing occurs when i plug my device directly into the mb. i have four usb ports on my board and it does this regardless of which port i choose. all my drivers are up to date, etc. so, anybody have any guesses? it seems to me like something isn't right on the mb itself. i have an asus p4533-e board. thx!