svn 1.6.9 stuck on CLOSE_WAIT after 'svn info'

I have a bash script that runs this command as part of a code testing
system:

        svn info https://server.highfleet.com/repository/trunk/Project --
username user --password secret

Every tenth run or so, it hangs, producing no output. Perhaps notable
is this open TCP socket:

svn 22905 testuser 4u IPv4 43196765 0t0
TCP client.highfleet.com:35940->server.highfleet.com:https (CLOSE_WAIT)

The client is:
$ svn --version

svn, version 1.6.9 (r901367)
compiled Jan 27 2010, 08:12:30

The following repository access (RA) modules are available:
* ra_neon : Module for accessing a repository via WebDAV protocol
using Neon.
   - handles 'http' scheme
   - handles 'https' scheme
* ra_svn : Module for accessing a repository using the svn network
protocol.
   - with Cyrus SASL authentication
   - handles 'svn' scheme
* ra_local : Module for accessing a repository on local disk.
   - handles 'file' scheme
* ra_serf : Module for accessing a repository via WebDAV protocol
using serf.
   - handles 'http' scheme
   - handles 'https' scheme

The client OS is Debian:
2.6.32-2-amd64 #1 SMP Fri Feb 12 00:01:47 UTC 2010 x86_64 GNU/Linux

The server OS is Debian:
2.6.30-bpo.1-686-bigmem #1 SMP Mon Aug 17 17:28:51 UTC 2009 i686 GNU/
Linux

I can supply any further information required to get to the bottom of
this one. Thanks a lot,

Lars A. Peterson
Product Release Engineer
Highfleet, Inc.
Received on 2010-04-05 20:30:53 CEST