By moving one's hand slightly which also moves the mouse and all the files
that are selected, Windows interprets this as dragging which copies the
files.  Done this plenty of times myself.  ;-)

You either have to practice or set the drag sensitivity differently.

Drag sensitivity specifies how far (in pixels) the mouse must
move with the button held down before the system decides
that you are dragging the object. Increase this value if you
find that you are dragging objects accidentally when you click
on them.

The only way to adjust the drag sensitivity that I know of is with TweakUI.

Download TweakUI here >>>

Microsoft PowerToys for Windows XP
http://www.microsoft.com/windowsxp/pro/downloads/powertoys.asp

Tweak UI
This PowerToy gives you access to system settings that are not
exposed in the Windows XP default user interface, including
mouse settings, Explorer settings, taskbar settings, and more.

Version 2.10 requires Windows XP Service Pack 1 or Windows
Server 2003.

Tweak UI
  TweakUI.exe
===

The guide shows plenty of other things that you can do with TweakUI.

Tweak UI for Windows XP Guide
http://www.winxpsolution.com/Tweakuixppro.aspx

-----
These are all the Mouse settings that can be set with TweakUI.

TweakUI
[+] Mouse

Menu Speed
The Menu Speed slider control sets the speed at which
cascading menus automatically open when you move the
mouse over them.  The fastest setting causes them to open
immediately and the slowest setting is extraordinary slow.

To test the mouse setting, right-click the test icon.
-----

Double-click sensitivity
Double-click sensitivity specifies how close together two
mouse clicks need to be (in pixels) to be considered a
double click.

To test the double-click sensitivity, click twice on the test icon
with the left mouse button.  If the two clicks registered as a
double-click, then the icon will change.
-----

Drag sensitivity
Drag sensitivity specifies how far (in pixels) the mouse must
move with the button held down before the system decides
that you are dragging the object. Increase this value if you
find that you are dragging objects accidentally when you click
on them.

To test drag sensitivity, try to drag the test icon with the
left mouse button.  The icon will begin dragging when you
have moved the mouse the necessary distance.
-----

Hover
This is used to detect when the mouse hovers over the icon to get selected.
The size of the region is determined by the hover sensitivity in pixels.
-----

Wheel
This is used to control the number of lines when the mouse wheel is
scrolled.  This can be either one page at a time or a particular number of
lines at a time.
-----

X-Mouse
The “Activation follows mouse” checkbox enables X-Mouse style window
activation.  When X-mouse style window activation is enabled, you need only
move the mouse into a window in order to give it focus.  Normally you must
click on a window in order to give it focus.

--
Hope this helps.  Let us know.

Wes
MS-MVP Windows Shell/User

In news:eRj2RZ7xFHA.736@tk2msftngp13.phx.gbl,
Ed Ingram <eingr...@cox.net> hunted and pecked: