I have a wireless network at home with time capsule. I connect to the internet through it with 2 computers: one mac and one pc. I can download and upload perfectly with the pc, but with mac, using the same program: utorrent, I'm having some troubles. I have one opened port in my modem for the torrents. I've set utorrent to use this port, but with mac, the download speed keeps very low (below 2 kB/s). Sometimes it goes to 40 - 60 kB/s for some moments (depending on how many seeds I have) but then it comes down again. My upload speed never goes above 10 kB/s. On the other hand, with pc I keep constant download and upload speed, even if I use the same torrent file that wasn't working on the mac (of course, not at the same time). So I assume my modem and time capsule configuration for this are ok, but what could be wrong with the Mac?