Commands accessing SVN repository not returning on FreeBSD?

Hi,

we've SVN 1.4.4 installed on a FreeBSD 6.3-PRERELEASE system (Core2Duo, 160
GB SATA HD).

This system is accessed by 10 users via heterogeneous environments (Windows,
Linux, Mac OS X). The clients are all 1.4.x conformant and include

- cmd line (Linux, Win, Mac OS X)
- TortoiseSVN (Win)
- Subclipse (Eclipse IDE plugin used on all platforms)

The repository is 4.5 GB in size and is accessed via svn protocol. The
svnserve processes are started via inetd, like this

svn3 stream tcp nowait/3/500 root /usr/local/bin/svnserve svnserve -i -r /home/empic/svn

(svn3 is an alias for a port no specified in /etc/services)

We're experiencing random svn stalls in a sense that once one client doesn't
get a response from the server all following SVN commands trying to access the
repository don't return as well (in contrast, a command accessing only the local
working copy, like "svn st" works).

Are there any known problems with SVN 1.4.4 regarding the aforementioned
stalls on FreeBSD 6.2/6.3?

In addition, I'm also interested in FreeBSD configurations in which such
stalls don't occur.

Thanks in advance for any info/sharing your knowledge!

Kind regards,

        Holger