An analysis of your HJT log shows the following problems :
We didn’t detect any active process of a firewall on your system. Reasons maybe:
(1.) You are using the windows firewall or a hardware firewall.
(2.) You are using a firewall of an unknown vendor.
(3.) You are using a firewall, but for unknown reasons it is disabled
(4.) You don’t use any firewall at all.
We recommend you to use a firewall.
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
Unnecessary (deactivated) entry that can be fixed.
http://www.spyandseek.com/Search.php?search_for=7E853D72-626A-48EC-A868-BA8D5E23E045&search=SAS-Search (see first 5 entries)
[b]O23 - Service: Automatic Updates (wuauserv) - Unknown owner - C:\WINDOWS[/b]
This is not the original which is listed in your HJT log 5 entries above this one. This is a fake update service and might be the source of your problem.
Overview of running tasks :
smss.exe
System task
Session Manager Subsystem
winlogon.exe
System task
Microsoft Windows Logon Process
services.exe
System task
Windows Service Controller
lsass.exe
System task
Local Security Authority Service
svchost.exe
System task
Microsoft Service Host Process
svchost.exe
System task
Microsoft Service Host Process
btwdins.exe
System task
Microsoft Bluetooth Service
svchost.exe
System task
Microsoft Service Host Process
aswUpdSv.exe
Virusscan
Avast Anti-Virus Component
ashServ.exe
Virusscan
Avast
spoolsv.exe
System task
Microsoft Printer Spooler Service
Explorer.EXE
System task
Microsoft Windows Explorer
iviRegMgr.exe
Backgroundtask
RegMgr Module
jqs.exe
Backgroundtask
jqs.exe
AsTray.exe
Unknown task
Unknown task
(The above belongs to either ASUS … http://www.pcpitstop.com/libraries/process/i/AsTray.exe.html … or to Voyetra Audio Station … http://www.bleepingcomputer.com/startups/Astray.exe-347.html … neither of which have to be on at start-up)
svchost.exe
System task
Microsoft Service Host Process
PnkBstrA.exe
Suspicious task (but we know why it is running, right?)
pnkbstra.exe
igfxext.exe
Driver
Intel Common User Interface
svchost.exe
System task
Microsoft Service Host Process
AsAcpiSvr.exe
Unknown task (Part of ACPI driver for EEEPC from ASUS)
Unknown task http://www.pcpitstop.com/libraries/process/i/AsAcpiSvr.exe.html
igfxsrvc.exe
Driver
Intel(R) Common User Interface
AsEPCMon.exe
Backgroundtask
AsEPCMon.exe
jusched.exe
Backgroundtask
Sun Java Update Scheduler
ETDCtrl.exe
Unknown task (belongs to ElanTech touchpad)
Unknown task http://www.glaryutilities.com/startuplibrary/ETDWare=ETDCtrl.exe.html
igfxtray.exe
Application
Intel Graphics configuration and diagnostic application
hkcmd.exe
Application
Intel multimedia devices
RTHDCPL.EXE
Driver
Realtek HD Audio Sound Effect Manager
SOUNDMAN.EXE
Backgroundtask
Realtek Avance Logic Inc
ashMaiSv.exe
Virusscan
Avast Anti-Virus Component
ashWebSv.exe
Virusscan
avast! Web Scanner
GrooveMonitor.exe
Backgroundtask
GrooveMonitor Utility
ashDisp.exe
Virusscan
Avast AntiVirus
ctfmon.exe
System task
Alternative User Input Services
GoogleUpdate.exe
Backgroundtask
GoogleUpdate.exe
GoogleUpdate.exe
Backgroundtask
Google Updater
SuperHybridEngine.exe
Unknown task (belongs to ASUS)
Unknown task http://www.pcpitstop.com/libraries/process/i/SuperHybridEngine.exe.html
svchost.exe
System task
Microsoft Service Host Process
pidgin.exe
Unknown task ( multi-protocol Instant Messaging client)
Unknown task http://www.pcreview.co.uk/startup/pidgin.exe.php
mbam.exe
Anti Add/Spyware software
mbam.exe
chrome.exe
Application
Chrome Browser
chrome.exe
Application
Chrome Browser
chrome.exe
Application
Chrome Browser
HijackThis.exe
Application
Merijn Hijackthis