|It is quite normal to see several rundll32.exe instances in "prefetch" (each with a different set of numbers after their names). I have 11 in my XP prefetch folder right now and the computer runs just fine.|
They simply retain information to speed up rundll32.exe operations and do not "run" in the true sense of the word. Prefetch files are NOT the cause of your slow running.
You need to explain more about the problem you are having so that we can help, avoiding any preconcieved ideas. There are many reasons, such as viruses and/or too many background programs running. It wouldn't hurt to install and run MalwareBytes freebie because this often finds and fixes viruses etc that AV's miss.
You might get a small improvement if you install and run CCleaner freebie and defragment the HD too but I suspect there are other reasons for your issue.
What did you mean by "Only old posts available"?
Always pop back and let us know the outcome - thanks