None. My wireless keyboard and mouse were picked up by linux just like they were wired. I was expecting a problem but there was none. As a matter of fact, I didnt have any problem with anything : the homemade usb cable, wireless KB and mouse, installing linux or running it.
Well, I do wish that the linux install disk would tell you if you had a 10 gig drive or the 8 gig. I just assumed it was the 8 gig. And the display being cutoff on the borders is very annoying (Some would say unusable).