偶没次打开网页都要停顿几秒钟,打开任何网页都要停顿,反应很慢,这是为什么?

建议您扫描并整理磁盘看看，清空IE临时文件夹...

都试过了,还是那样!

扫个log贴上来看看

HijackThis_815汉化版扫描日志 V1.99.1
保存于      13:38:07, 日期 2005-10-30
操作系统：  Windows XP SP2 (WinNT 5.01.2600)
浏览器：    Internet Explorer v6.00 SP2 (6.00.2900.2180)

当前运行的进程：         
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\PROGRAM FILES\RISING\RAV\Ravmond.exe
c:\program files\rising\rfw\rfwsrv.exe
C:\PROGRAM FILES\RISING\RAV\RavStub.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
c:\program files\rising\rfw\RfwMain.exe
C:\Program Files\ChinaNet\VnetClient.exe
C:\Program Files\rising\Rav\RavMon.exe
C:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Common Files\SAN\diskman.exe
C:\WINDOWS\system32\rundll32.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\system32\ctfmon.exe
C:\PROGRA~1\Yahoo!\ASSIST~1\YLive.exe
G:\software\HijackThis1991zww\HijackThis1991zww.exe

O2 - BHO: yPhtb - {33BBE430-0E42-4f12-B075-8D21ACB10DCB} - C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yphtb.dll
O2 - BHO: VnetCookie Class - {4E83D567-4697-4F7B-B1F0-A513B01DB89A} - c:\PROGRA~1\chinanet\VNETTR~1.DLL
O2 - BHO: QQIEHelper - {54EBD53A-9BC1-480B-966A-843A333CA162} - C:\Program Files\Tencent\QQ\QQIEHelper.dll
O2 - BHO: YDragSearch - {62EED7C6-9F02-42f9-B634-98E2899E147B} - C:\PROGRA~1\Yahoo!\ASSIST~1\assist\YDRAGS~1.DLL
O2 - BHO: MMSAssist - {6671A431-5C3D-463d-A7CF-5587F9B7E191} - C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL
O2 - BHO: MMSAssist - {6671A431-5C3D-463d-A7CF-5587F9B7E191}? - (no file)
O2 - BHO: stdup - {6A512BF7-EC78-4e8d-9841-6C02E8FA9838} - C:\WINDOWS\system32\stdup.dll
O2 - BHO: stdup - {6A512BF7-EC78-4e8d-9841-6C02E8FA9838}? - (no file)
O2 - BHO: (no name) - {A5366673-E8CA-11D3-9CD9-0090271D075B}? - (no file)
O3 - IE工具栏增项: (no name) - {F43BD772-ABDD-43b7-A96A-3E9E61946EC0}? - (no file)
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - IE右键菜单中的新增项目:  >> 彩信发送 << - res://C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL/mms.htm
O8 - IE右键菜单中的新增项目: 上传到QQ网络硬盘 - C:\Program Files\Tencent\QQ\AddToNetDisk.htm
O8 - IE右键菜单中的新增项目: 添加到QQ自定义面板 - C:\Program Files\Tencent\QQ\AddPanel.htm
O8 - IE右键菜单中的新增项目: 添加到QQ表情 - C:\Program Files\Tencent\QQ\AddEmotion.htm
O8 - IE右键菜单中的新增项目: 用QQ彩信发送该图片 - C:\Program Files\Tencent\QQ\SendMMS.htm
O9 - 浏览器额外的按钮: (no name) - {6671A433-5C3D-463d-A7CF-5587F9B7E191} - C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL
O9 - 浏览器额外的“工具”菜单项: MMSAssist工具条设置 - {6671A433-5C3D-463d-A7CF-5587F9B7E191} - C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL
O9 - 浏览器额外的按钮: (no name) - {6671A433-5C3D-463d-A7CF-5587F9B7E191}? - C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL
O9 - 浏览器额外的“工具”菜单项: MMSAssist工具条设置 - {6671A433-5C3D-463d-A7CF-5587F9B7E191}? - C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL
O9 - 浏览器额外的按钮: QQ - {c95fe080-8f5d-11d2-a20b-00aa003c157b}? - C:\Program Files\Tencent\QQ\QQ.EXE
O9 - 浏览器额外的“工具”菜单项: 腾讯QQ - {c95fe080-8f5d-11d2-a20b-00aa003c157b}? - C:\Program Files\Tencent\QQ\QQ.EXE
O9 - 浏览器额外的按钮: (no name) - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6}? - C:\Program Files\Tencent\QQ\QQIEHelper.dll
O9 - 浏览器额外的“工具”菜单项: QQ炫彩工具条设置 - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6}? - C:\Program Files\Tencent\QQ\QQIEHelper.dll
O9 - 浏览器额外的按钮: 易趣购物 - {EE60714F-AC17-427e-861A-FD60CBDF119A}? - http://click2.ad4all.net/url2/urlmanage/url.asp?id=50 (file missing)
O9 - 浏览器额外的“工具”菜单项: 易趣购物 - {EE60714F-AC17-427e-861A-FD60CBDF119A}? - http://click2.ad4all.net/url2/urlmanage/url.asp?id=50 (file missing)
O16 - DPF: {3D8F74EE-8692-4F8F-B8D2-7522E732519E} (WebActivater Control) - http://game.qq.com/QQGame2.cab
O16 - DPF: {488A4255-3236-44B3-8F27-FA1AECAA8844} (CEditCtrl Object) - https://img.alipay.com/download/aliedit.cab
O16 - DPF: {AC3A36A8-9BFF-410A-A33D-2279FFEB69D2} (QQPlayer Control) - http://219.133.62.248/QQPlayer.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{B3C389FA-7017-450E-AB67-014B546D1F13}: NameServer = 202.101.172.46 202.101.172.47
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll
O23 - NT 服务: Rising Personal Firewall Service (RfwService) - Beijing Rising Technology Corporation Limited - c:\program files\rising\rfw\rfwsrv.exe
O23 - NT 服务: Rising Process Communication Center (RsCCenter) - rising - C:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
O23 - NT 服务: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - C:\PROGRAM FILES\RISING\RAV\Ravmond.exe
O23 - NT 服务: Universal Disk Manager - Unknown owner - C:\Program Files\Common Files\SAN\diskman.exe


一片迷茫中!

请关闭所有IE界面，重新使用HijackThis扫描一次，选中下面建议修复的项目，让HijackThis修复，修复前请允许HijackThis保留备份。（如果楼主知道是安全的可以不必勾选）
O2 - BHO: MMSAssist - {6671A431-5C3D-463d-A7CF-5587F9B7E191} - C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL
O2 - BHO: MMSAssist - {6671A431-5C3D-463d-A7CF-5587F9B7E191}? - (no file)
O2 - BHO: stdup - {6A512BF7-EC78-4e8d-9841-6C02E8FA9838} - C:\WINDOWS\system32\stdup.dll
O2 - BHO: stdup - {6A512BF7-EC78-4e8d-9841-6C02E8FA9838}? - (no file)
O2 - BHO: (no name) - {A5366673-E8CA-11D3-9CD9-0090271D075B}? - (no file)
O3 - IE工具栏增项: (no name) - {F43BD772-ABDD-43b7-A96A-3E9E61946EC0}? - (no file)
O8 - IE右键菜单中的新增项目: >> 彩信发送 << - res://C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL/mms.htm
O9 - 浏览器额外的“工具”菜单项: MMSAssist工具条设置 - {6671A433-5C3D-463d-A7CF-5587F9B7E191} - C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL
O9 - 浏览器额外的按钮: (no name) - {6671A433-5C3D-463d-A7CF-5587F9B7E191}? - C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL
O9 - 浏览器额外的“工具”菜单项: MMSAssist工具条设置 - {6671A433-5C3D-463d-A7CF-5587F9B7E191}? - C:\PROGRA~1\MMSASS~1\MMSASS~2.DLL

然后打开我的电脑→再点工具→打开文件夹选项→查看→把隐藏受保护的系统文件（推荐）和隐藏已知文件类型的扩展名的勾去掉→再显示所有文件→找到以下文件并删除：(如果有的话)
C:\WINDOWS\system32\stdup.dll
删除文件夹C:\PROGRA~1\MMSASS~1