Problems with large CryptnetUrlCache folder structure

I have a Windows 2000 (SP 4) Server that has a problem with the size of the
CryptnetUrlCache folder structure in each user profile. Each time a user
profile is created it contains this folder structure which is approximately
130 MB in size.

Questions:

1. Where does the system get the information used to create this folder
structure in each profile?

2. What can be done to reduce the size of this folder structure. On other
servers it is MUCH smaller.

Thanks in advance for any help you can provide.

Henry Cumbie