Changing directory on start-up

[Ben Kovitz]

Hi, folks.  For some reason, gvim 7.0 running on Cygwin on my system 
cd's to the directory that contains the file I'm editing.  Does anyone 
know what's causing that or how I can turn if off?

In more detail, what happens is this.  I type something like:
   vi /some/other/dir/filename
at the command line, and then when I'm in gvim, if I type:
   :pwd
I get:
   /some/other/dir
I'd rather just stay in the directory where I started gvim.
Ben