So, copying a file to a Windows laptop over wifi. File's a bit over a gigabyte. After a bit over a minute, I gave up, shut down wireless, grabbed an ethernet cable from a desktop which wasn't running, plugged it into the laptop, and reran the copy. It finished in 17 seconds. It had an estimated 3 minutes remaining over wireless, after a minute or so of copying. This is why some of us want Ethernet.