1. Time:- what happens when you R click on the time (lower r.h.corner)and select Adjust Time/Date?
2. I can't really see how anyone would know there is a virus from the info you have given. To be really sure you could goto Panda (http://www.pandasecurity.com/homeusers/solutions/activescan/). Be patient as you will have to d/load their ActiveX controls.
3. My xp pro was also very slow as it hadn't had a rebuild for a long time so I went to this page http://www.blackviper.com/WinXP/supertweaks.htm and followed the instructions. This meant turning off a lot of Microsoft stuff that I just didn't need. Now my system is quick, smooth and I am enjoying it a lot more.
Your list "CCleaner, SuperAntispyware, Spybot, Malwarebytes and Smitfraud. Antivirus is Nod32" could be pruned. If Nod32 is your main anti-virus read carefully what else the program does. Most commercial programs these days also do the job which spybot,adaware etc were once used for. Also you are running risk of conflict. Choose one good product, find out what it does then get rid of the rest except CCleaner which is a useful cleanup tool for regular system clearing.
My system is an Intel core2 quad Q6600, 2.4GHz wirh 4Gig ram
XP SP3 OS.
Everything is slowing down from loading my IE homepage to opening antivirus programs.
I have used CCleaner, SuperAntispyware, Spybot, Malwarebytes and Smitfraud. Antivirus is Nod32.
Everything is clean.
The only symptoms that I can see are:
1) the taskbar time has change to Military Time and I don't know how to switch back
2)I tried to do a "System Restore" and after the restart I get a message that says that the restore was not completed??
Does this sound like a virus of some sort??