Dick Hazeleger wrote:

No? Have a thorough look at the "Anti-Spyware" support forums, when
they find out that you're running ME or XP, the first thing they will
tell you is that you should turn off System Restore... for the simple
reason I wrote above.... BTW: It's the same with virus infections:
turn off the setting, clean the system, turn the setting on again!

And everyone who gives such advice is wrong and clearly doesn't understand
what and how system restore works. Disable SR and clear the archive once
the problem is resolved but not before as this removes the lifeline of
being able to restore a trashed system to a good state using a system
checkpoint created before infection.

An infected archive will never cause a problem unless a user voluntarily
chooses to restore to a checkpoint created after infection and before the
system was cleaned. Even that might be acceptable if the user manages to
create an unusable system whilst trying to clean their system.
--
Mike Maltby MS-MVP