问题：
我的电脑突然不能自动关机。点击关闭后，没有反应。除不能接收邮件和浏览网页外，一切操作正常。点击重起也没有反应。只能靠关闭电源来关机。用瑞星没有查出病毒，请教各位高手我的电脑是中了毒吗？ 怎样才能解决这个问题？ 多谢！
下面是我的日志，帮忙给看一下：
Logfile of HijackThis v1.99.1
Scan saved at 22:09:18, on 2006-5-30
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\csrss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
E:\Rising\Rfw\rfwsrv.exe
C:\WINNT\system32\svchost.exe
F:\Rising\Rav\CCenter.exe
F:\Rising\Rav\Ravmond.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\System32\nvsvc32.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\svchost.exe
F:\Rising\Rav\RavStub.exe
C:\WINNT\Explorer.EXE
E:\Rising\Rfw\RfwMain.exe
C:\WINNT\system32\Rundll32.exe
C:\WINNT\system32\rundll32.exe
C:\PROGRA~1\Yahoo!\ASSIST~1\YLive.exe
C:\PROGRA~1\Yahoo!\Assistant\yassistse.exe
F:\Rising\Rav\RavTask.exe
F:\Rising\Rav\Ravmon.exe
C:\WINNT\system32\temp.exe
C:\WINNT\system32\internat.exe
E:\泡泡龙\fonts\xvcclip.exe
C:\Program Files\FlashGet\flashget.exe
F:\Rising\Rav\RsAgent.exe
C:\WINNT\msagent\AgentSvr.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
F:\HijackThis.exe
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - F:\ActiveX\AcroIEHelper.dll
O2 - BHO: yPhtb - {33BBE430-0E42-4f12-B075-8D21ACB10DCB} - C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yphtb.dll
O2 - BHO: Anti Fish - {38928D50-8A48-44C2-945F-D2F23F771410} - C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yangling.dll
O2 - BHO: 雅虎助手 - {406F94F0-504F-4a40-8DFD-58B0666ABEBD} - C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yasbar.dll
O2 - BHO: QQBrowserHelper
Object Class - {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: IeCatch2 Class - {A5366673-E8CA-11D3-9CD9-0090271D075B} - C:\PROGRA~1\FLASHGET\jccatch.dll
O2 - BHO: (no name) - {CE7C3CF0-4B15-11D1-ABED-709549C10000} - (no file)
O2 - BHO: IE - {D157330A-9EF3-49F8-9A67-4141AC41ADD4} - C:\WINNT\downlo~1\cnshook.dll
O2 - BHO: YiSou - {EF1D17A9-089F-40cc-8D64-7324CDEBA0DB} - C:\PROGRA~1\yisou\yisoub.dll
O3 - Toolbar: 电台(&R) - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O3 - Toolbar: 一搜工具条 - {115F6E46-FCBC-41ed-B3B5-3BDDD4AAB5E5} - C:\Program Files\yisou\yisou.dll
O3 - Toolbar: 雅虎助手 - {406F94F0-504F-4a40-8DFD-58B0666ABEBD} - C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yasbar.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [NvCplDaemon] rem RUNDLL32.EXE C:\WINNT\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] rem nwiz.exe /install
O4 - HKLM\..\Run: [helper.dll] C:\WINNT\system32\rundll32.exe C:\PROGRA~1\3721\helper.dll,Rundll32
O4 - HKLM\..\Run: [CnsMin] Rundll32.exe C:\WINNT\downlo~1\CnsMin.dll,Rundll32
O4 - HKLM\..\Run: [WinampAgent] D:\Winamp\winampa.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [ClientQyule] C:\Program Files\Qyule\Qyule.exe
O4 - HKLM\..\Run: [NMGameX_AutoRun] C:\WINNT\system32\Rundll32.exe NMGameX.dll,LiveProcess /aa
O4 - HKLM\..\Run: [YDTMain.exe] C:\PROGRA~1\YDT\YDTMain.exe
O4 - HKLM\..\Run: [YLive.exe] C:\PROGRA~1\Yahoo!\ASSIST~1\YLive.exe
O4 - HKLM\..\Run: [yassistse] "C:\PROGRA~1\Yahoo!\Assistant\yassistse.exe"
O4 - HKLM\..\Run: [RfwMain] "E:\Rising\Rfw\rfwmain.exe" -Startup
O4 - HKLM\..\Run: [RavTask] "F:\Rising\Rav\RavTask.exe" -system
O4 - HKLM\..\Run: [explorar] C:\WINNT\system32\temp.exe
O4 - HKLM\..\RunOnce: [YahooC:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yasnoad.dll41167359] regsvr32 /s C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yasnoad.dll
O4 - HKLM\..\RunOnce: [YahooC:\PROGRA~1\Yahoo!\ASSIST~1\yscrblock.dll41170031] regsvr32 /s C:\PROGRA~1\Yahoo!\ASSIST~1\yscrblock.dll
O4 - HKCU\..\Run: [Internat.exe] internat.exe
O4 - HKCU\..\Run: [Xplus] "E:\泡泡龙\fonts\Xplus_Wait.exe" /min
O4 - HKCU\..\Run: [xvcclip] E:\泡泡龙\fonts\xvcclip.exe
O4 - HKCU\..\Run: [Xplus_spy] "E:\泡泡龙\fonts\xvcclip.exe" /min
O4 - Global Startup: Adobe Reader Speed Launch.lnk = F:\Reader\reader_sl.exe
O8 - Extra context menu item: !搜一搜 - res://C:\Program Files\yisou\yisou.dll/232
O8 - Extra context menu item: 使用网际快车下载 - C:\Program Files\FlashGet\jc_link.htm
O8 - Extra context menu item: 使用网际快车下载全部链接 - C:\Program Files\FlashGet\jc_all.htm
O8 - Extra context menu item: 添加到QQ自定义面板 - C:\Program Files\Tencent\QQ\AddPanel.htm
O8 - Extra context menu item: 添加到QQ表情 - C:\Program Files\Tencent\QQ\AddEmotion.htm
O8 - Extra context menu item: 添加到雅虎订阅(&Y) - res://C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yrss.dll/YRSSMENUEXT
O8 - Extra context menu item: 用QQ彩信发送该图片 - C:\Program Files\Tencent\QQ\SendMMS.htm
O8 - Extra context menu item: 雅虎搜索 - res://C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yasbar.dll/246
O11 - Options group: [!CNS] 网络实名
O16 - DPF: {BC207F7D-3E63-4ACA-99B5-FB5F8428200C} - http://bar.baidu.com/update/IESearch.cab
O16 - DPF: {D0A29C6C-AA71-4423-8C4A-5998B774C448} (IEDown Class) - http://download.ourgame.com/IEDown4.cab
O16 - DPF: {E4E2F180-CB8B-4DE9-ACBB-DA745D3BA153} (Rising Web Scan
Object) - http://download.rising.com.cn/register/pcver/autoupgradepad/pcver2006new/OL2006.cab
O18 - Protocol: mbox - {7DEE9D05-FA0A-4416-A6F3-6537D0EAB6A6} - C:\WINNT\system32\mbprot.dll
O23 - Service: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINNT\System32\nvsvc32.exe
O23 - Service: Rising Proxy Service (RfwProxySrv) - Beijing Rising Technology Co., Ltd. - e:\rising\rfw\rfwproxy.exe
O23 - Service: Rising Personal Firewall Service (RfwService) - Beijing Rising Technology Co., Ltd. - E:\Rising\Rfw\rfwsrv.exe
O23 - Service: Rising Process Communication Center (RsCCenter) - Beijing Rising Technology Co., Ltd. - F:\Rising\Rav\CCenter.exe
O23 - Service: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - F:\Rising\Rav\Ravmond.exe
