Initial program and desktop

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I have a user using the MSRDP ActiveX client and is attempting to
start a single application on Windows 2003 (for example, notepad.exe).
It has worked fine for all other users accessing different machines.
For this user, it does indeed start notepad.exe, but he also sees the
desktop (i.e. all of the icons on the desktop, plus the Start task
bar, etc.). The RDP-TCP Environment tab is set to "Start initial
program" and there are no Group Policies overriding it.

Now, I thought the Windows shell is not supposed to start in this case
(and I've never seen it happen before). Is it possible that
"explorer.exe" is getting started some other way? Has anyone ever run
into this?

Thanks!

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