重装的系统时间不长，浏览网页经常出现"不能引用内存，该内存不能为real"之类对话框，同时输入法也不灵了，确定或取消IE都自行关闭。网上查杀病毒的若干种方法都试用了还不行。
    更重要的是我有一个疑惑：瑞星防火墙中的“系统状态”中有一项：svchost.exe[PID=1148],C:\windows\system32\svchost.exe下UDPlocal 0.0.0.0:1027[灰鸽子]是何意？是否中灰鸽子了。
    翘首以盼给予解答，不胜感激！

谢谢版主！那是何意呢？用您介绍的木马专杀工具（刚下载）查杀，非但没发现木马，结果上述问题却变得更为严重了。赶快用windows Update打了补丁，好像又稍稍恢复正常了。
    系统这两天把我的头脑都弄昏了，百思不得其解啊!版主能否于百忙之中给予指点迷津，在下万分感谢您，学习中——

日志如下，请帮忙分析一下：
Logfile of Kaka v2. 0. 0. 5 Scan Module v2. 0. 0. 1
Scan saved at 22:00:29, on 2006-01-09
Platform: Microsoft Windows XP Professional Service Pack 2 (Build 2600)
MSIE: Internet Explorer v6.00 SP2; (6.00.2900.2180 (xpsp_sp2_rtm.040803-2158))


Running processes:
[smss.exe]
CommandLine =

[csrss.exe]
CommandLine = C:\WINDOWS\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,3072,512 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ProfileControl=Off MaxRequestThreads=16

[winlogon.exe]
CommandLine = winlogon.exe

[services.exe]
CommandLine = C:\WINDOWS\system32\services.exe

[lsass.exe]
CommandLine = C:\WINDOWS\system32\lsass.exe

[svchost.exe]
CommandLine = C:\WINDOWS\system32\svchost -k DcomLaunch

[svchost.exe]
CommandLine = C:\WINDOWS\system32\svchost -k rpcss

[CCenter.exe]
CommandLine = "C:\Program Files\Rising\Rav\CCenter.exe"

[svchost.exe]
CommandLine = C:\WINDOWS\System32\svchost.exe -k netsvcs

[svchost.exe]
CommandLine = C:\WINDOWS\system32\svchost.exe -k NetworkService

[svchost.exe]
CommandLine = C:\WINDOWS\system32\svchost.exe -k LocalService

[RavMonD.exe]
CommandLine = "C:\Program Files\Rising\Rav\Ravmond.exe"

[rfwsrv.exe]
CommandLine = "c:\program files\rising\rfw\rfwsrv.exe"

[Explorer.EXE]
CommandLine = C:\WINDOWS\Explorer.EXE

[spoolsv.exe]
CommandLine = C:\WINDOWS\system32\spoolsv.exe

[RavStub.exe]
CommandLine = "C:\Program Files\Rising\Rav\RavStub.exe" /RAVMOND

[RfwMain.exe]
CommandLine =  -StartUp

[pctspk.exe]
CommandLine = C:\WINDOWS\system32\pctspk.exe

[wdfmgr.exe]
CommandLine = C:\WINDOWS\system32\wdfmgr.exe

[alg.exe]
CommandLine = C:\WINDOWS\System32\alg.exe

[RavTask.exe]
CommandLine = "C:\PROGRAM FILES\RISING\RAV\RAVTASK.EXE" -SYSTEM

[ctfmon.exe]
CommandLine = "C:\WINDOWS\system32\ctfmon.exe"

[RavMon.exe]
CommandLine = "C:\Program Files\Rising\Rav\Ravmon.exe" -SYSTEM

[ADSLx2.exe]
CommandLine = "D:\program files\超级奇兵\ADSL超频奇兵 V3.07\ADSLx2.exe" h

[HNMainUI.exe]
CommandLine = "C:\Program Files\HelloNet\HNMainUI.exe"

[iexplore.exe]
CommandLine = "C:\Program Files\Internet Explorer\iexplore.exe" http://www.ikaka.com/

[KkScan.exe]
CommandLine = "C:\Program Files\Rising\KakaToolBar\KkScan.exe"

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page=http://www.tl.ah163.net/
R3 - Default URLSearchHook is missing
O1 - Hosts: 127.0.0.1      localhost
O2 - BHO: IeCatch2 Class - {A5366673-E8CA-11D3-9CD9-0090271D075B} - C:\PROGRA~1\FLASHGET\jccatch.dll
O3 - Toolbar: 卡卡上网安全助手 - {DB9ECD4F-FB8F-4311-B3CE-90B976C2707C} - C:\WINDOWS\system32\kakatool.dll
O3 - Toolbar:  (file missing)
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKLM\..\Run: [RfwMain] "C:\Program Files\Rising\Rfw\rfwmain.exe" -Startup
O4 - HKLM\..\Run: [RavTask] "C:\Program Files\Rising\Rav\RavTask.exe" -system
O4 - Startup: ADSL拨号王.lnk = C:\Program Files\HelloNet\HelloNet.exe
O4 - Startup: ADSL超频奇兵 V3.07.lnk = D:\program files\超级奇兵\ADSL超频奇兵 V3.07\ADSLx2.exe
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: 导出到 Microsoft Office Excel(&X) - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra Button: 网址大全 - {1FBA04EE-3024-11D2-8F1F-0000F87ABD18} - http://www.coc.cc (file missing)
O9 - Extra Button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FLASHGET\flashget.exe
O9 - Extra 'Tools' menuitem: &FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FLASHGET\flashget.exe
O14 - IERESET.INF: START_PAGE_URL=http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1129939852511
O17 - HKLM\System\CCS\Services\Tcpip\..\{3B8D0E39-66F8-44E4-85B3-0E8FB97FC819}: NameServer = 202.96.128.86,202.96.128.143
O17 - HKLM\System\CCS\Services\Tcpip\..\{53FE3CD8-9176-4ED0-9806-E2D2A1AB35A9}: NameServer = 211.98.4.1 211.98.192.3
O18 - Protocol: about - {3050F406-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: cdl - {3dd53d40-7b8b-11D0-b013-00aa0059ce02} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: dvd - {12D51199-0DB5-46FE-A120-47A3D7D937CC} - C:\WINDOWS\system32\msvidctl.dll
O18 - Protocol: file - {79eac9e7-baf9-11ce-8c82-00aa004ba90b} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: ftp - {79eac9e3-baf9-11ce-8c82-00aa004ba90b} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: gopher - {79eac9e4-baf9-11ce-8c82-00aa004ba90b} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: http - {79eac9e2-baf9-11ce-8c82-00aa004ba90b} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: https - {79eac9e5-baf9-11ce-8c82-00aa004ba90b} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: ipp - (no CLSID) - (no file)
O18 - Protocol: its - {9D148291-B9C8-11D0-A4CC-0000F80149F6} - C:\WINDOWS\system32\itss.dll
O18 - Protocol: javascript - {3050F3B2-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: local - {79eac9e7-baf9-11ce-8c82-00aa004ba90b} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: mailto - {3050f3DA-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: mhtml - {05300401-BCBC-11d0-85E3-00C04FD85AB4} - C:\WINDOWS\system32\inetcomm.dll
O18 - Protocol: mk - {79eac9e6-baf9-11ce-8c82-00aa004ba90b} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: ms-its - {9D148291-B9C8-11D0-A4CC-0000F80149F6} - C:\WINDOWS\system32\itss.dll
O18 - Protocol: msdaipp - (no CLSID) - (no file)
O18 - Protocol: res - {3050F3BC-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: sysimage - {76E67A63-06E9-11D2-A840-006008059382} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: tv - {CBD30858-AF45-11D2-B6D6-00C04FBBDE6E} - C:\WINDOWS\system32\msvidctl.dll
O18 - Protocol: vbscript - {3050F3B2-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: wia - {13F3EA8B-91D7-4F0A-AD76-D2853AC8BECE} - C:\WINDOWS\system32\wiascr.dll
O20 - Winlogon Notify: igfxcui
O23 - Service: Human Interface Device Access (HidServ) -  - C:\WINDOWS\system32\svchost.exe -k netsvcs
O23 - Service: PCTEL Speaker Phone (Pctspk) - PCtel, Inc. - C:\WINDOWS\system32\pctspk.exe
O23 - Service: Rising Personal Firewall Service (RfwService) - Beijing Rising Technology Co., Ltd. - c:\program files\rising\rfw\rfwsrv.exe
O23 - Service: Rising Process Communication Center (RsCCenter) - Beijing Rising Technology Co., Ltd. - "C:\Program Files\Rising\Rav\CCenter.exe"
O23 - Service: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - "C:\Program Files\Rising\Rav\Ravmond.exe"

HijackThis_zww汉化版扫描日志 V1.99.1
保存于      22:23:11, 日期 2006-1-9
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:\Program Files\Rising\Rav\CCenter.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Rising\Rav\Ravmond.exe
c:\program files\rising\rfw\rfwsrv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Rising\Rav\RavStub.exe
c:\program files\rising\rfw\RfwMain.exe
C:\WINDOWS\system32\pctspk.exe
C:\Program Files\Rising\Rav\RavTask.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Rising\Rav\Ravmon.exe
D:\program files\超级奇兵\ADSL超频奇兵 V3.07\ADSLx2.exe
C:\Program Files\HelloNet\HNMainUI.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\Administrator\桌面\新建文件夹\HijackThis1991zww.exe

R3 - 默认的URLSearchHook丢失。用HijackThis修复
O2 - BHO: IeCatch2 Class - {A5366673-E8CA-11D3-9CD9-0090271D075B} - C:\PROGRA~1\FLASHGET\jccatch.dll
O3 - IE工具栏增项: 卡卡上网安全助手 - {DB9ECD4F-FB8F-4311-B3CE-90B976C2707C} - C:\WINDOWS\system32\kakatool.dll
O3 - IE工具栏增项: (no name) - {E0E899AB-F487-11D5-8D29-0050BA6940E3}? - (no file)
O4 - 启动项HKLM\\Run: [RfwMain] "C:\Program Files\Rising\Rfw\rfwmain.exe" -Startup
O4 - 启动项HKLM\\Run: [RavTask] "C:\Program Files\Rising\Rav\RavTask.exe" -system
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - Startup: ADSL拨号王.lnk = C:\Program Files\HelloNet\HelloNet.exe
O4 - Startup: ADSL超频奇兵 V3.07.lnk = ?
O8 - IE右键菜单中的新增项目: 使用网际快车下载 - C:\Program Files\FlashGet\jc_link.htm
O8 - IE右键菜单中的新增项目: 使用网际快车下载全部链接 - C:\Program Files\FlashGet\jc_all.htm
O8 - IE右键菜单中的新增项目: 导出到 Microsoft Office Excel(&X) - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - 浏览器额外的按钮: 网址大全 - {1FBA04EE-3024-11D2-8F1F-0000F87ABD18} - http://www.coc.cc (file missing)
O9 - 浏览器额外的按钮: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FLASHGET\flashget.exe
O9 - 浏览器额外的“工具”菜单项: &FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FLASHGET\flashget.exe
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1129939852511
O17 - HKLM\System\CCS\Services\Tcpip\..\{3B8D0E39-66F8-44E4-85B3-0E8FB97FC819}: NameServer = 202.96.128.86,202.96.128.143
O17 - HKLM\System\CCS\Services\Tcpip\..\{53FE3CD8-9176-4ED0-9806-E2D2A1AB35A9}: NameServer = 211.98.4.1 211.98.192.3
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll
O23 - NT 服务: PCTEL Speaker Phone (Pctspk) - PCtel, Inc. - C:\WINDOWS\system32\pctspk.exe
O23 - NT 服务: Rising Personal Firewall Service (RfwService) - Beijing Rising Technology Co., Ltd. - c:\program files\rising\rfw\rfwsrv.exe
O23 - NT 服务: Rising Process Communication Center (RsCCenter) - Beijing Rising Technology Co., Ltd. - 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

谢谢白客青出于蓝！

那不知道是何原因了