Source specials in Emacs 22 /AucTeX and Miktex 2.6

[R McDonald]

I have virtually identical installations of MikTeX 2.6 and Emacs 22 on 
two machines, both running XP SP2. Both have the same .emacs file. The 
Emacs version is pre-compiled (5/20/07) from

http://www.gnu.org/software/auctex/download-for-windows.html

When I compile and then view a latex file on Machine A, using Yap, there 
are source specials. Every time I do an inverse search on this machine, 
there is a new invocation of emacsclientw. So after 5 searches, I have 5 
copies of emacsclientw running.

On machine B, Yap says there are no source specials, although C-h v says 
that the value of TeX-source-specials-mode is t. In both cases I am 
invoking the latex compiler and viewer via repeated invocations of C-c C-c.

The strangest thing to me is the different behavior on the two machines. 
At this point I would just love some suggestions for debugging this 
problem. Thanks in advance!

Bob