我的电脑最近打开IE总是非常非常的慢，点击了一个网页之后IE的内容是空白，过一两分钟之后网页才冒出来，网页显示出来的速度还正常，就是中间那段空白不知道怎么回事，而且如果打开超过三个网页就很容易死机，请各位高手帮我看看检查结果中有什么问题，如何处理？谢谢了。（其中那些情景聊天、寻宝乐趣多、kugoo下载都没用过的）
以下是检查结果：
O9 - Extra button: 情景聊天 - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - http://cn.rd.yahoo.com/home/messenger/bjk/clientbtn/?http://cn.messenger.yahoo.com/ (file missing)
O9 - Extra button: (no name) - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (file missing)
O9 - Extra 'Tools' menuitem: 修复浏览器 - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (file missing)
O9 - Extra button: 在线查毒 - {f58d36c3-40be-4418-a786-d8fbe3eb3554} - C:\KAV6\kavie.HTM
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra button: (no name) - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (file missing)
O9 - Extra 'Tools' menuitem: 清理上网记录 - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (file missing)
O10 - Unknown file in Winsock LSP: c:\windows\system32\cdnns.dll
O11 - Options group: [!CNS] 上网助手-地址栏搜索
O11 - Options group: [CDNCLIENT] 中文上网
O16 - DPF: {3D8F74EE-8692-4F8F-B8D2-7522E732519E} (WebActivater Control) - http://game.qq.com/QQGame2.cab
O16 - DPF: {56A7DC70-E102-4408-A34A-AE06FEF01586} (天下搜索) - http://iebar.t2t2.com/iebar.cab
O16 - DPF: {98A62E3F-A8C5-4EF0-8A00-C70CF9D18A89} (LoaderCore Class) - http://tb.sogou.com/DLLoader.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMessengerSetupDownloader.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{B8581DFB-76E7-46B4-A61A-6A95B16D5C98}: NameServer = 202.96.128.68
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll
O23 - Service: FirebirdGuardianDefaultInstance - The Firebird Project - C:\PROGRA~1\广东省~1\FireBird\bin\fbguard.exe
O23 - Service: FirebirdServerDefaultInstance - The Firebird Project - C:\PROGRA~1\广东省~1\FireBird\bin\fbserver.exe
O23 - Service: Kingsoft AntiVirus Service (KAVSvc) - kingsoft Antivirus - C:\KAV6\KAVSvc.EXE
O23 - Service: U8管理软件 (UFNet) - Unknown owner - C:\WINDOWS\system32\ServerNT.exe
O23 - Service: Network System (Universal Disk Manager) - COMENET TECHNOLOGY - C:\Program Files\Common Files\SAND\Network.exe
