|Long time ago I had this problem, that was caused by an Internet Explorer update, that wants me to restart the computer. Then install shield came up with something like preparing desktop for..., can't remember exactly.|
When the installation of the IE update not finishes completely, there will be left a registry entry in RunOnce, that causes to pop up this screen everytime you restart your computer.
If this is exactly your problem, post back.
The original poster should always write the last response !!!
Let us know, if the problem is solved !!!