Wow, ouch. That's kinda scary when you use all 6. then again, I've got one USB I use for my midi keyboard, one that's always in use for the webcam, and one that's always in use for hooking things like my brother's phone, or his ipod in (actually, each of those use a different port), so I guess if we had much more we'd start getting into trouble with using them all up, lol. I guess it's really not that hard if we were to get an external drive or 2. (We don't have a firewire port, so USB would be all we have)