About the hijackthis log, if you look carfully Spyros, you can see that Eddy’s analyzer missed some stuff ;), here what needed to be removed:

O2 - BHO: Popup Manager - {08E74C67-99A6-45C7-94DA-A397A8FD8082} - (no file)
O2 - BHO: (no name) - {E6DA8678-2095-CA84-8A20-983A6726D192} - (no file)
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - C:\Program Files\Microsoft Money\System\mnyviewer.dll (disabled by BHODemon)
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=36467&clcid=0x409
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Besturing) - http://a840.g.akamai.net/7/840/537/2004061001/housecall.trendmicro.com/housecall /xscan53.cab
O16 - DPF: {80DD2229-B8E4-4C77-B72F-F22972D723EA} (AvxScanOnline Control) - http://www.bitdefender.com/scan/Msie/bitdefender.cab
O18 - Protocol hijack: mhtml -

However there is nothing bad there related to your temp folder, but try running ccleaner anyway (i see you already have it from your log).
Also where is this ‘hsperfdata’ located?

And about the malware ‘Swizzor’, i have sent in 3 different samples of this malware myself over the last couple of months, only 2 where added so far, most likely because it is Spyware/Adware and not a virus/worm (Avast is a virus scanner, however Alwil does add them sometimes), and all the Friends/family machines that they were on where using ‘Warez P2P’ (which is what Swizzor is bundled with), are you running it as well?, the location you provided was also a common one for the Swizzor i found on these machines. (sometimes removing this infection disabled warez as well).
Also from your log i can see signs of Swizzor, they are the 4 running ‘iexplorer’ processes, they are used to update the malware and download even more to your computer.
Normally you can only terminate/kill the processes for a few seconds before they start themselfs back up again.
The only way to stop this is to delete the files without the processes being enabled (this was quite difficult even for me), maybe try killing the processes from Task Manager (Alt + Ctrl + Delete) then run ccleaner very quickly.

Good luck

–lee