I thought someone else would suggest an idea from the Lockergnome
Newletter on this topic. I tried it and it seems to alleviate the problem
you describe. I did some searching in the archives and found the tip. (The
line spacing is mine.)

GnomeTIP

It's smart to run the Disk Defragmenter every so often.  Once it starts
reorganizing your data, the last thing you want is your screen saver to
kick in.  Tired of having to move the mouse every other minute (or
forgetting to temporarily turn it off)?

Run REGEDIT.EXE,

navigate to HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \
CurrentVersion \ Applets, and

create a new key: "Defrag" (without quotes).

Now, within this newly created key, create the key: "Settings" (without
quotes).

In the Settings key, create a string value and label it
"DisableScreenSaver" (without quotes).

Next, edit the value "(Default)" and change it to: "YES" (without quotes).

The next time DEFRAG is run, screen savers will be disabled.

Read it in the original newsletter here:
http://www.lockergnome.com/issues/win95nt/20000701.html

Karen Miller wrote:

> Hi.  I have the Thomas Kincaid Screen Saver.  When I try to run Disk
> Cleanup, it fails, apparently because my screen saver is running.
> Normally, I then move the screen saver off the start up menu, run Disk
> Cleanup and then move the screen saver back to the startup menu.
>
> Is there an easier way to close the screen saver long enough for the
> Cleanup disk to run other than what I am doing?
>
> Thanks
>
> Karen Miller
>
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