An analysis of your HJT log shows the following problems :
We couldn’t detect any active process of a firewall on your system. Possible reasons:
(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. Download and install one or activate windows xp´s own firewall.
MSIE: Internet Explorer v7.00 (7.00.6002.18005)
IE8 has been out for more than a year. It is much more secure than IE7.
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
Unnecessary (deactivated) entry that can be fixed. Related to Windows Live “Click-to-Call”
http://www.spyandseek.com/Search.php?search_for=5C255C8A-E604-49b4-9D64-90988571CECB&search=SAS-Search (various 02 entries on the list)
O9 - Extra button: eBay.co.uk - Buy It Sell It Love It - {76577871-04EC-495E-A12B-91F7C3600AFA} - http://rover.ebay.com/rover/1/710-44557-9400-3/4 (file missing)
Unnecessary (deactivated) entry that can be fixed.
Overview of running tasks :
Dwm.exe
System process
Desktop Window Manager
Explorer.EXE
System process
Microsoft Windows Explorer
taskeng.exe
System process
Task Scheduler Engine
MSASCui.exe
Anti Add/Spyware software
Microsoft Windows Defender Antispyware
SynTPEnh.exe
Driver
Synaptics touchpad tray icon
RtHDVCpl.exe
System process
High definition audio codec driver from Realtek Semiconductor
NDSTray.exe
Backgroundtask
ConfigFreeT Tray on a Toshiba laptop.
igfxtray.exe
Application
Intel Graphics configuration and diagnostic application
hkcmd.exe
Application
Intel multimedia devices
igfxpers.exe
Driver
Intel Common User Interface Module
jusched.exe
Backgroundtask
Sun Java Update Scheduler
iTunesHelper.exe
Application
Apple Itunes
AvastUI.exe
Virusscan
avast! Antivirus
TOSCDSPD.exe
Driver
Toshiba Laptop CD/DVD Component
ehtray.exe
Backgroundtask
Microsoft Media Center Tray Icon
wmpnscfg.exe
Backgroundtask
Windows Media Player Network Sharing Service Confi
TeaTimer.exe
Application
Spybot S&D Realtime Scanner
BCU.exe
Unknown task BN-WD54G Wireless Client Utility
Unknown task ( http://www.runscanner.net/lib/BCU.exe.html )
igfxsrvc.exe
Driver
Intel(R) Common User Interface
ehmsas.exe
System process
Microsoft Media Center State Aggregator Service
CFSwMgr.exe
Backgroundtask
ConfigFree Switch Manager
uTorrent.exe
Backgroundtask
?Torrent
chrome.exe
Application
Chrome Browser
chrome.exe
Application
Chrome Browser
chrome.exe
Application
Chrome Browser
hijackthis.exe
Application
Merijn Hijackthis