I recently verified that the onboard network adaptor, in my primary machine, sucks.  It seems that there is some sort of a hardware problem with it, and as a result it ends up capping my upload speed at around 10kB/s.  It got to be very annoying when I had some active torrents.  So… I decided to drop $10 and get a standalone network card.  But a moral issue arose within me because I didn’t want to just give up the builtin network card.  So, I chose to implement load balancing in XP, which happens to be very easy to do… After I did this, I’m averaging 80-90kB/s upload speeds now… happy happy ratios

Just make this registry change, if you have multiple network adapters:

System Key: [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesNetBTParameters]
Value Name: RandomAdapter
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = disabled, 1 = enabled)