兄弟们帮忙看看我的BT为何速度慢 怎么整?

Riser

阿尔卡特 511的猫 用Bitcomet下载 日志显示为:

Default tracker optimization rules file loaded.
Start Listening at TCP Port:13626
Start Listening at UDP Port:13626
BitComet 0.68  is running on:
  CPU       : AMD Athlon(tm) 64 Processor 3000+ 2250 MHz
  RAM size  : 1,023.23 MB
  OS Version: Microsoft Windows XP Professional Service Pack 2 (Build 2600)

Windows XP WF Status: TCP Port is not opened in Windows Firewall.
Windows XP WF Status: add TCP port in Windows Firewall Succeed.
Windows XP WF Status: UDP Port is not opened in Windows Firewall.
Windows XP WF Status: add UDP port in Windows Firewall Succeed.
Update Local IP: 127.0.0.1
Windows XP ICS Status: TCP PortMapping Failed.
Windows XP ICS Status: UDP PortMapping Failed.
Windows XP UPnP Status: Found WANConnectionDevice [THOMSON]  []
Windows XP UPnP Status: Found Service: urn:schemas-upnp-org:service:WANDSLLinkConfig:1
Windows XP UPnP Status: Error occur when Adding TCP Port Mapping!
Windows XP UPnP Status: Error occur when Adding UDP Port Mapping!
Windows XP UPnP Status: Found Service: WANPPPConnection
Windows XP UPnP Status: WAN IP: 125.118.125.90
Windows XP UPnP Status: TCP Port Mapping Added!
Windows XP UPnP Status: UDP Port Mapping Added!
Update Local IP: 10.0.0.1
Windows XP ICS Status: WAN IP: 125.118.125.90
Windows XP ICS Status: TCP PortMapping Successfully Added.
Windows XP ICS Status: UDP PortMapping Successfully Added.
Windows XP UPnP Status: Found WANConnectionDevice [THOMSON]  []
Windows XP UPnP Status: Found Service: urn:schemas-upnp-org:service:WANDSLLinkConfig:1
Windows XP UPnP Status: Error occur when Adding TCP Port Mapping!
Windows XP UPnP Status: Error occur when Adding UDP Port Mapping!
Windows XP UPnP Status: Found Service: WANPPPConnection
Windows XP UPnP Status: WAN IP: 125.118.125.90
Windows XP UPnP Status: TCP Port Mapping Existed!
Windows XP UPnP Status: UDP Port Mapping Existed!
UDP tracker report: WAN IP = 125.118.125.90

到底什么原因让速度慢?

lyjspeed

什么网络带宽多少？怎么个慢法？