deploy:update_code hangs... why?

I'm using webistrano 1.2 on Centos 5. This is a new server so I'm
setting things up like how they were on my old server. I installed my
subversion repo, & webistrano, and did a deploy:setup, which worked
great. The problem is when I do a real deploy:update into the
production environment, it hangs.

The cap output shows this:

 ** loading stage recipe 'touch_log_files'
 ** loading stage recipe 'diff_from_last_deploy'
 ** loading stage recipe 'mongrel_cluster_overrides'
 ** loading stage recipe 'restart_observer'
  * executing `deploy'
  * executing `deploy:update'
 ** transaction: start
  * executing `deploy:update_code'

...and it stops. When I look at the process table on the server, I see
these 3 proceses:

jason     4307  0.0  0.0   4452   988 pts/7    S+   01:24   0:00 sh -c
cd /home/jason/svn/working/webistrano-1.2 && ruby script/runner -e
production ' deployment = Deployment.find(6); deployment.prompt_config
= {} ; Webistrano::Deployer.new(deployment).invoke_task! ' >> /home/
jason/svn/working/webistrano-1.2/log/production.log 2>&1

jason     4308  5.6  0.8  34892 29912 pts/7    S+   01:24   0:02 ruby
script/runner -e production  deployment = Deployment.find(6);
deployment.prompt_config = {} ;
Webistrano::Deployer.new(deployment).invoke_task!

jason     4374  0.0  0.0   9080  2428 pts/7    S+   01:25   0:00 svn
info svn+ssh://xx.xx.xx.xx/svn/foo/code/ror/trunk --username deploy --
password  *****  --no-auth-cache -rHEAD



Why does it hang at this point? When I run the svn info command
manually, it returns immediately/works fine, so why is it going to
sleep when webistrano runs it?

All advice would be appreciated- thanks in advance!
-Jason