Hello, While i was playing Counter Strike Source, i noticed my latency jump, from 80 to 500 and back up and down again. This caused many lag problems.

I was wandering why this might happen?
It hasn't happened before?There could be a number of reasons why your ping could jump like that.

1. Another process on your computer is accessing the internet (like antivirus downloading updates and virus definitions)
2. You or someone else in the house is using the internet while you're playing CS.
3. Either one of the above (or both) is occurring on the host's computer.Hmmmm, it seems to happen today too... and it seems to be the same game. "Insurgency"I left out a point. It could just be the physical distance between you and the host's computer.Well, i have never had problems like that before.
Here is a log file just to be sure.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 3:57:21 PM, on 7/14/2008
Platform: Windows Vista  (WinNT 6.00.1904)
MSIE: Internet EXPLORER v7.00 (7.00.6000.16681)
Boot mode: Normal

Running processes:
C:\Windows\System32\smss.exe
C:\Windows\system32\csrss.exe
C:\Windows\system32\wininit.exe
C:\Windows\system32\csrss.exe
C:\Windows\system32\services.exe
C:\Windows\system32\lsass.exe
C:\Windows\system32\lsm.exe
C:\Windows\system32\svchost.exe
C:\Windows\system32\winlogon.exe
C:\Windows\system32\svchost.exe
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe
C:\Windows\system32\svchost.exe
C:\Windows\system32\SLsvc.exe
C:\Windows\system32\svchost.exe
C:\Program Files\Norman\Npm\Bin\eLogsvc.exe
C:\Program Files\Norman\Npm\Bin\Zanda.exe
C:\Windows\system32\svchost.exe
C:\Program Files\avast1thegood\aswUpdSv.exe
C:\Program Files\avast1thegood\ashServ.exe
C:\Windows\System32\spoolsv.exe
C:\Windows\system32\svchost.exe
C:\Windows\system32\Dwm.exe
C:\Windows\system32\taskeng.exe
C:\Windows\Explorer.EXE
C:\Program Files\Java\jre1.6.0_05\bin\jusched.exe
C:\Program Files\Norman\Npm\Bin\Zlh.exe
C:\Windows\ehome\ehtray.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Windows\ehome\ehmsas.exe
C:\Program Files\Norman\Nvc\BIN\NIP.EXE
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Program Files\Adobe\Photoshop Elements 6.0\PhotoshopElementsFileAgent.exe
C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe
C:\Windows\System32\svchost.exe
C:\Windows\system32\SearchIndexer.exe
C:\Program Files\Spybot - Search & Destroy\SDWinSec.exe
C:\Program Files\Norman\Npm\bin\NJEEVES.EXE
C:\Windows\system32\WUDFHost.exe
C:\Program Files\Norman\Nvc\BIN\NVCSCHED.EXE
C:\Program Files\Norman\Nvc\bin\nvcoas.exe
C:\Program Files\avast1thegood\ashMaiSv.exe
C:\Program Files\avast1thegood\ashWebSv.exe
C:\Program Files\Windows Live\Messenger\usnsvc.exe
C:\Windows\system32\taskeng.exe
C:\Program Files\Internet Explorer\IEUser.exe
C:\Program Files\Norman\Nvc\bin\cclaw.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Windows\system32\Macromed\Flash\FlashUtil9e.exe
C:\Windows\system32\SearchProtocolHost.exe
C:\Windows\system32\SearchFilterHost.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
C:\Windows\system32\wbem\wmiprvse.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: TorrentMan Toolbar - {7c5c0f58-e061-457d-9033-77307f5ed00c} - C:\Program Files\TorrentMan\tbTorr.dll
O1 - Hosts: ::1 localhost
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O2 - BHO: TorrentMan Toolbar - {7c5c0f58-e061-457d-9033-77307f5ed00c} - C:\Program Files\TorrentMan\tbTorr.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O3 - Toolbar: TorrentMan Toolbar - {7c5c0f58-e061-457d-9033-77307f5ed00c} - C:\Program Files\TorrentMan\tbTorr.dll
O4 - HKLM\..\Run: [MSConfig] "C:\Windows\system32\msconfig.exe" /auto
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\Windows\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_05\bin\jusched.exe"
O4 - HKLM\..\Run: [Norman ZANDA] C:\Program Files\Norman\Npm\bin\ZLH.EXE /LOAD /SPLASH
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'NETWORK SERVICE')
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O13 - Gopher Prefix:
O16 - DPF: {48DD0448-9209-4F81-9F6D-D83562940134} (MySpace Uploader Control) - http://lads.myspace.com/upload/MySpaceUploader1006.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx1.hotmail.com/mail/w2/resources/VistaMSNPUplden-au.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: Adobe Active File Monitor V6 (AdobeActiveFileMonitor6.0) - Unknown OWNER - C:\Program Files\Adobe\Photoshop Elements 6.0\PhotoshopElementsFileAgent.exe
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\avast1thegood\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\avast1thegood\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\avast1thegood\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\avast1thegood\ashWebSv.exe
O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Norman eLogger service 6 (eLoggerSvc6) - Norman ASA - C:\Program Files\Norman\Npm\Bin\eLogsvc.exe
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Norman NJeeves - Unknown owner - C:\Program Files\Norman\Npm\bin\NJEEVES.EXE
O23 - Service: Norman ZANDA - Norman ASA - C:\Program Files\Norman\Npm\Bin\Zanda.exe
O23 - Service: Norman Virus Control on-access component (nvcoas) - Norman ASA - C:\Program Files\Norman\Nvc\bin\nvcoas.exe
O23 - Service: Norman Virus Control Scheduler (NVCScheduler) - Norman ASA - C:\Program Files\Norman\Nvc\BIN\NVCSCHED.EXE
O23 - Service: SBSD Security Center Service (SBSDWSCService) - Safer Networking Ltd. - C:\Program Files\Spybot - Search & Destroy\SDWinSec.exe
O23 - Service: ServiceLayer - Nokia. - C:\Program Files\Common Files\PCSuite\Services\ServiceLayer.exe
O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files\Common Files\Steam\SteamService.exe
O23 - Service: WMP54Gv4SVC - GEMTEKS - C:\Program Files\Linksys Wireless-G PCI Wireless Network Monitor\WLService.exe

--
End of file - 8573 bytes
You're log is clean. However, it looks like you are running more than one antivirus programs. (Avast and Norman)

I (as well as Microsoft, McAfee, Symantec and all our Malware Specialists)  recommend that you DO NOT have more than one antivirus product installed and running on your computer at a time.

The real-time protection of two antivirus programs may conflict with each other and cause the following:

1) False Alarms: When the anti virus software tells you that your PC has a virus when it actually doesn't.
2) Conflicts: Your system may lock up due to both products attempting to access the same file at the same time.
3) Performance: More that one antivirus will cause your PC to become slow and it may EVEN crash or blue screen.

I strongly suggest you either configure only one antivirus program to enable automatic real-time scanning, and leave the rest disabled, using them for on-demand scanners or go to Start > Control Panel > Add or Remove Programs and uninstall all but one antivirus program.

This may be the problem you're having, but I think it's one of the above reasons.