Wolfblitz, we do no see any malicious threats.
What is your computer brand and model? How much memory? and What hard drive is installed.
Do you have Internet Explorer 8.0 installed?
I would remove AVG 8 and replace it with the free Avast or the free Avira Antivir. Then run a scan with whichever one you choose.
I would remove Adaware and Spybot with Tea timer, as they both slow down the computer and do little, if any, good. All they remove is cookies (sometimes not) and you have 14 cookies in SuperAntiSpyware that they missed. In addition, Adaware and Spybot conflict.
Then I would remove Internet Explorer 8.0, if installed, then reboot, run a full defragment, then reboot, then reinstall Internet Explorer 8.0. We see a lot of slowdowns caused by the first versions of IE 8.0. A reinstall seems to help a lot.
Computer slowdowns can be caused by any poorly performing module... inadequate memory... hard drive, or too many processes running at one time.
If you have 512 MB or less, upgrade your memory to 1GB.
If your hard drive is more than four years old, replace it. If it is a Hitachi or Maxtor of any age, replace it now. Today.
Good luck to you.