Error: "Chunk delimiter was invalid"

[ Sorry for sending to both dev@ and users@, I couldn't decide which one
  is more appropriate. ]

One of my co-workers is getting this error when he tries to do a merge
of a directory that contains several large files (one of them 41MB):

  $ svn merge -r22337:23745 http://localhost:8000/svn/<real-path-deleted> .
  U Standard48AL3.fnt
  U Standard48FKAL3.fnt
  subversion/libsvn_ra_dav/util.c:670: (apr_err=175002)
  svn: REPORT request failed on '/svn/Ableton/!svn/vcc/default'
  subversion/libsvn_ra_dav/util.c:294: (apr_err=175002)
  svn: REPORT of '/svn/Ableton/!svn/vcc/default': Chunk delimiter was invalid (http://localhost:8000)

He is getting the error reproducibly, every time. He accesses the
repository from home through an ssh tunnel. I tried the same merge
operation both in the local network and from my home through an ssh
tunnel, it works fine for me; so I suspect it must have something to do
with the network config, like MTU settings or what do I know.

We are both using Mac OS X 10.3.9; svn is 1.1.4 (neon 0.24.7). The
server is running Debian linux, Apache 2.0.51, svn 1.1.4. The
repository is fsfs.

We have neon logs (with neon-debug-mask=130) both of his failed attempt
and of my successful run. Is anybody interested in looking at them?
They are 13MB together (4.3MB zipped).

-- 
Stefan Haller
Ableton
http://www.ableton.com/
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