Desktop Background Query

This is not life threatening, death defying... hell, its just irritating..... I want to be rid of the following issue:

Win2K, IE6.... blah, blah, blah.... when I boot up the system, after the password, my desktop flashes the previous background... ie... I had an Image of Emmylou Harris prior to the current (Hubble space scene if you must know). the screen flashes the EmmyLou background for a bit, they lays down the Hubble image as it should

/ I have gone thru the system with a fine toothed comb, deleted all EL Harris images, looked at every GIF, JPG, BMP to find any others...... nada


/ I want to know, does Win2K keep prior images hidden in some friggin cave


inquiring minds gotta know

thanks,
bill