picture blurry and the one on the left is not full you need to scroll to show is see all so it means nothing to me in the views i see ,in the task manager click on processes and make the box big and see what it shows

Picture is blurry because it's scaled to the window, if you open it in its own window or tab (or follow the photobucket link) you can click to display at full size.

I'm not familiar with cacheman, does it have a feature somewhere to show processes from all users? That's a common issue with the integrated task manager, by default it only shows processes that YOU innitiated on the list but it shows the actual cpu usage including "system" and other users.

got the blurry problem fixed, its still only partial info because the software need to scroll down to show all processes using the cpu .and task manager should show whats causing the usage

You seem to know your way around a computer but just in case please do the following:-
1. Press Ctrl Alt and Del all together.
2.When Task manager opens Click on "Processes"
3. Press "Print Screen" button
4. Open "Paint" Start-All Programs-Accessories-Paint.
5. Click "Edit"
6. Click "Paste"
7. Click "File" "save as"
8. Type "WTM"
9. Click on arrow of "Save as type" and change to "Jpeg" Click "OK"
10. Attach to next post here.

Again, sorry if you knew all this.

The processes are sorted by CPU usage, and is refreshed automatically... see that many process take 0% in the bottom? well all the processes below are taking 0% as well.

I could have taken any other program, I can swear to you there are no processes that take more than 1-2% at a time, and adding em up really do not make 50% CPU usage. I've checked Taskmgr myself, and this is why I'm posting.

Have you looked into an "show processes from all-users" setting?

I have only 1 user

Would be interesting to see a rootkit scan result. You could do it yourself with IceSword, RKR or Blacklight or run this which includes GMER:
==Download this file to your DESKTOP: http://download.bleepingcomputer.com/sUBs/ComboFix.exe
-IMPORTANT! : disconnect from the web, turn off your Antivirus, Antispyware and Firewall for the duration of this scan. Don't forget to reset them before you go back on the web!
- to run it dclick the Combofix.exe icon and follow the prompts to start it. When finished, it will produce a log, C:\Combofix.txt - post that log in your next reply.
A word of caution - do not touch your mouse/keyboard until the scan has completed. The scan will temporarily disable your desktop, and if interrupted may leave your desktop disabled. If this occurs reboot to restore the desktop.

Guess what, I installed Sygate firewall, and Voila, CPU Usage is at mere 1-2%, having firefox, msn and the like loaded into memory.

Pretty scary stuff, I'll scan and get back to you about this!