先试试把防火墙关掉，如果解决了，问题就出在防火墙上

You should not turn off Windows Firewall unless you have another firewall enabled. Turning off Windows Firewall might make your computer (and your network, if you have one) more vulnerable to damage from worms or hackers.

1. Open Windows Firewall by clicking the Start button , clicking Control Panel, clicking Security, and then clicking Windows Firewall.

2. Click Turn Windows Firewall on or off. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

3. Click Off (not recommended), and then click OK.

所有跟帖： 

• 到目前为止，俺又尝试了关防火墙，关杀毒软件，清除历史记录，还是没有用 -woth- ♀ (0 bytes) () 12/07/2012 postreply 09:19:20