Same problem, more or less
I don't see why this thread is marked "Solved"...
My cpu gets quite hot, so I have a fan enhancer installed, and I've been monitoring cpu usage and temperature closely. Yesterday my svchost started taking 50% of the cpu, and it's killing my system... It runs at exactly 49-51% for hours at a time, sometimes stopping for a few minutes, regardless of what I'm doing.
I've installed Win7 about 2 weeks ago and everything used to be fine.
The only things that changed yesterday: I installed Spybot, and Foxit Reader (careful not to install the toolbar etc).
Attached are screenshots of the offending services, and a hijackthis log... My antivirus is Avira.

What else can I do?
Thanks in advance for any advice...
---
Logfile of HijackThis v1.99.1
Scan saved at 14:31:08, on 17/07/10
Platform: Unknown Windows (WinNT 6.01.3504)
MSIE: Internet Explorer v8.00 (8.00.7600.16385)
Running processes:
C:\Windows\system32\taskhost.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files\SigmaTel\C-Major Audio\WDM\sttray.exe
C:\Program Files\DellTPad\Apoint.exe
C:\Program Files\Logitech\SetPointP\SetPoint.exe
C:\Program Files\Babylon\Babylon-Pro\Babylon.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\uTorrent\uTorrent.exe
C:\Program Files\I8kfanGUI\I8kfanGUI.exe
C:\Users\AnnotatedSnark\AppData\Roaming\Dropbox\bin\Dropbox.exe
C:\Program Files\DellTPad\ApMsgFwd.exe
C:\Program Files\DellTPad\Apntex.exe
C:\Program Files\Common Files\LogiShrd\KHAL3\KHALMNPR.EXE
C:\Windows\system32\conhost.exe
C:\Program Files\DellTPad\HidFind.exe
C:\Program Files\OpenOffice.org 3\program\soffice.exe
C:\Program Files\Winamp\winamp.exe
C:\Program Files\OpenOffice.org 3\program\soffice.bin
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Windows\system32\SearchFilterHost.exe
C:\Program Files\Total Commander\TOTALCMD.EXE
C:\Systools\hijack\HijackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page =
Bing
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =
MSN.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL =
Bing
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page =
Bing
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
MSN.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O2 - BHO: SkypeIEPluginBHO - {AE805869-2E5C-4ED4-8F7B-F1F7851A4497} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [SigmatelSysTrayApp] %ProgramFiles%\SigmaTel\C-Major Audio\WDM\sttray.exe
O4 - HKLM\..\Run: [Apoint] C:\Program Files\DellTPad\Apoint.exe
O4 - HKLM\..\Run: [EvtMgr6] C:\Program Files\Logitech\SetPointP\SetPoint.exe /launchGaming
O4 - HKLM\..\Run: [Babylon Client] C:\Program Files\Babylon\Babylon-Pro\Babylon.exe -AutoStart
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [uTorrent] "C:\Program Files\uTorrent\uTorrent.exe"
O4 - HKCU\..\Run: [i8kfangui] C:\Program Files\I8kfanGUI\I8kfanGUI.exe /startup
O4 - Startup: Dropbox.lnk = C:\Users\AnnotatedSnark\AppData\Roaming\Dropbox\bin\Dropbox.exe
O4 - Startup: Logitech . Product Registration.lnk.disabled
O4 - Startup: OpenOffice.org 3.2.lnk = C:\Program Files\OpenOffice.org 3\program\quickstart.exe
O4 - Startup: Winamp.lnk = C:\Program Files\Winamp\winamp.exe
O8 - Extra context menu item: Translate with &Babylon - res://C:\Program Files\Babylon\Babylon-Pro\Utils\BabylonIEPI.dll/Translate.htm
O9 - Extra button: Skype add-on for Internet Explorer - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O9 - Extra 'Tools' menuitem: Skype add-on for Internet Explorer - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O10 - Unknown file in Winsock LSP: c:\windows\system32\nlaapi.dll
O10 - Unknown file in Winsock LSP: c:\windows\system32\napinsp.dll
O11 - Options group: [INTERNATIONAL] International
O13 - Gopher Prefix:
O18 - Protocol: skype-ie-addon-data - {91774881-D725-4E58-B298-07617B9B86A8} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O20 - Winlogon Notify: LBTWlgn - c:\program files\common files\logishrd\bluetooth\LBTWlgn.dll
O23 - Service: Andrea ST Filters Service (AESTFilters) - Andrea Electronics Corporation - C:\Windows\system32\aestsrv.exe
O23 - Service: Avira AntiVir Scheduler (AntiVirSchedulerService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\avguard.exe
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: Logitech Bluetooth Service (LBTServ) - Logitech, Inc. - C:\Program Files\Common Files\LogiShrd\Bluetooth\lbtserv.exe
O23 - Service: @%SystemRoot%\system32\qwave.dll,-1 (QWAVE) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: SBSD Security Center Service (SBSDWSCService) - Safer Networking Ltd. - C:\Program Files\Spybot\SDWinSec.exe
O23 - Service: @%SystemRoot%\system32\seclogon.dll,-7001 (seclogon) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: SigmaTel Audio Service (STacSV) - IDT, Inc. - C:\Windows\system32\STacSV.exe
O23 - Service: @%SystemRoot%\system32\Wat\WatUX.exe,-601 (WatAdminSvc) - Unknown owner - C:\Windows\system32\Wat\WatAdminSvc.exe
O23 - Service: @%PROGRAMFILES%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - %PROGRAMFILES%\Windows Media Player\wmpnetwk.exe (file missing)