rsync: problem accessing files on mapped network drive

[Philip Flip Kromer]

Hello, I am using rsync 2.5.5  protocol version 26 with cygwin 1.3.10-1. 
When I connect to a directory that resides on the computer, everything 
works great.  When I connect to a directory that is a mapped UNC drive, 
rsync cannot find any files:

   tick:~/foo/bar$ net use 'y:' '\\tick\chairface'
   The command completed successfully.

   tick:~/foo/bar$ ls /y/foo/bar
   arthur.txt*  diefled.txt*

   tick:~/foo/bar$ rsync -nCuvaz localhost:/y/foo/bar/ .
   receiving file list ... link_stat /y/foo/bar/. : No such
   file or  directory
   done
   client: nothing to do: perhaps you need to specify some
   filenames or the --recursive option?
   rsync error: partial transfer (code 23) at main.c(594)

This only happens over the network; it works without the colon:
   tick:~/foo/bar$ rsync -nCuvaz /y/foo/bar/ .
   building file list ... done
   arthur.txt
   diefled.txt
   wrote 129 bytes  read 28 bytes  314.00 bytes/sec
   total size is 15924  speedup is 101.43

It breaks whether rsync is run on a local or remote machine. It breaks 
with drives mapped to UNC shares from my local (windows) machine (as 
above), or to drives mapped to samba network shares.

The output of cygcheck is attached, and some other possibly interesting 
details are appended.

If I should send this instead to the rsync mailing list please advise. 
Thanks for any ideas.

flip

----------------------------------------------------------------------------
   tick:~$ ls -ld /?
   drwxr-xr-x   11 flip     administ        0 May  7 05:13 /c/
   drwxr-xr-x    1 flipcyg  usercyg         0 May  7 06:25 /f/
   drwxr-xr-x    5 flip     administ        0 Dec 31  1979 /h/
   drwxr-xr-x    5 flip     administ        0 Dec 31  1979 /m/
   drwxr-xr-x    1 help     helpserv        0 May  3 11:52 /u/
   drwxr-xr-x    1 everyone everyone        0 May  7 05:13 /y/
   tick:~$ ls -ld /x
   drwxr-xr-x    1 flip     administ        0 Dec 31  1979 /x/

[/x doesn't appear in the ls because the directory c:\unix\f and c:\unix\y 
exist but c:\unix\x doesn't.  Either way the error occurs.]

   tick:~$ net use
   New connections will be remembered.
   Status       Local     Remote              Network
   -------------------------------------------------------------------
   OK           F:        \\granular\me       Microsoft Windows Network
   OK           U:        \\granular\users    Microsoft Windows Network
   OK           X:        \\tick\thrakkorzog  Microsoft Windows Network
   OK           Y:        \\tick\chairface    Microsoft Windows Network
   The command completed successfully.

   tick:~/foo$ mount
   c:\unix\bin on /usr/bin type system (binmode)
   c:\unix\lib on /usr/lib type system (binmode)
   c:\unix on / type system (binmode)
   c: on /c type system (binmode)
   f: on /f type system (binmode)
   h: on /h type system (binmode)
   m: on /m type system (binmode)
   u: on /u type system (binmode)
   y: on /y type system (binmode)
   x: on /x type system (binmode,noumount)

The directories C:\unix\f and C:\unix\y exist and were explicitly mounted. 
The directory c:\unix\x does not; /x is an automagical (cygdrive) mount.
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