Old Prefetch data

CCleaner for Windows CCleaner Windows Bug Reporting
1

What is difference between 'Old' Prefetch data and Prefetch data?

This entry does not work. I tried on Win 7 32-bit and 64-bit systems.

2

Doesn't work on Win7. Applies only to XP.

3

By the way, if you click the link Kroozer posted, it will explain prefetch/old prefetch.

4

Windows automatically by itself deals with "old prefetch data."