installing glance with swift backend

I am trying to configure glance to use swift.I have installed swift based on the instructions http://swift.openstack.org/howto_installmultinode.html and it works works . I then installed glance and changed the /etc/glance/glance-api.config to look as follows :

DEFAULT]
# Show more verbose log output (sets INFO log level output)
verbose = True

# Show debugging output in logs (sets DEBUG log level output)
debug = False

# Which backend store should Glance use by default is not specified
# in a request to add a new image to Glance? Default: 'file'
# Available choices are 'file', 'swift', and 's3'
default_store =swift

# Address to bind the API server
bind_host = 0.0.0.0

# Port the bind the API server to
bind_port = 9292

# Address to find the registry server
registry_host = 0.0.0.0

# Port the registry server is listening on
registry_port = 9191

# Log to this file. Make sure you do not set the same log
# file for both the API and registry servers!
log_file = /var/log/glance/api.log

# Send logs to syslog (/dev/log) instead of to file specified by `log_file`
use_syslog = False

# ============ Filesystem Store Options ========================

# Directory that the Filesystem backend store
# writes image data to
filesystem_store_datadir = /var/lib/glance/images/

# ============ Swift Store Options =============================
swift_store_auth_address = https://146.141.78.76:8080/auth/v1.0

# User to authenticate against the Swift authentication service
swift_store_user = system:root

# Auth key for the user authenticating against the
# Swift authentication service
swift_store_key = testpass

# Container within the account that the account should use
# for storing images in Swift
swift_store_container = glance

# Do we create the container if it does not exist?
swift_store_create_container_on_put = true

# Whether to use ServiceNET to communicate with the Swift storage servers.
# (If you aren't RACKSPACE, leave this False!)
#
# To use ServiceNET for authentication, prefix hostname of
# `swift_store_auth_address` with 'snet-'.
# Ex. https://example.com/v1.0/ -> https://snet-example.com/v1.0/
swift_enable_snet = False

# ============ Image Cache Options ========================

image_cache_enabled = False

# Directory that the Image Cache writes data to
# Make sure this is also set in glance-pruner.conf
image_cache_datadir = /var/lib/glance/image-cache/

# Number of seconds after which we should consider an incomplete image to be
# stalled and eligible for reaping
image_cache_stall_timeout = 86400

# ============ S3 Store Options =============================

# Address where the S3 authentication service lives
s3_store_host = 127.0.0.1:8080/v1.0/

# User to authenticate against the S3 authentication service
s3_store_access_key = <20-char AWS access key>

# Auth key for the user authenticating against the
# S3 authentication service
s3_store_secret_key = <40-char AWS secret key>

# Container within the account that the account should use
# for storing images in S3. Note that S3 has a flat namespace,
# so you need a unique bucket name for your glance images. An
# easy way to do this is append your AWS access key to "glance".
# S3 buckets in AWS *must* be lowercased, so remember to lowercase
# your AWS access key if you use it in your bucket name below!
s3_store_bucket = <lowercased 20-char aws access key>glance
# Do we create the bucket if it does not exist?
s3_store_create_bucket_on_put = False

# ============ Delayed Delete Options =============================

# Turn on/off delayed delete
delayed_delete = False

[pipeline:glance-api]
pipeline = versionnegotiation context apiv1app

# To enable Image Cache Management API replace pipeline with below:
# pipeline = versionnegotiation imagecache apiv1app

[pipeline:versions]
pipeline = versionsapp

[app:versionsapp]
paste.app_factory = glance.api.versions:app_factory

[app:apiv1app]

# ============ Delayed Delete Options =============================

# Turn on/off delayed delete
delayed_delete = False

[pipeline:glance-api]
pipeline = versionnegotiation context apiv1app

# To enable Image Cache Management API replace pipeline with below:
# pipeline = versionnegotiation imagecache apiv1app

[pipeline:versions]
pipeline = versionsapp

[app:versionsapp]
paste.app_factory = glance.api.versions:app_factory

[app:apiv1app]
paste.app_factory = glance.api.v1:app_factory

[filter:versionnegotiation]
paste.filter_factory = glance.api.middleware.version_negotiation:filter_factory

[filter:imagecache]
paste.filter_factory = glance.api.middleware.image_cache:filter_factory

[filter:context]
paste.filter_factory = glance.common.context:filter_factory

When I run :
glance-api glance-api.conf --debug

I get :
Traceback (most recent call last):
  File "/usr/bin/glance-api", line 66, in <module>
    server.start(app, int(conf['bind_port']), conf['bind_host'])
  File "/usr/lib/pymodules/python2.6/glance/common/wsgi.py", line 65, in start
    socket = eventlet.listen((host, port), backlog=backlog)
  File "/usr/lib/pymodules/python2.6/eventlet/convenience.py", line 38, in listen
    sock.bind(addr)
  File "<string>", line 1, in bind
socket.error: [Errno 98] Address already in use

The log :

2011-10-06 14:10:26 DEBUG [glance-api] ********************************************************************************
2011-10-06 14:10:26 DEBUG [glance-api] Configuration options gathered from config file:
2011-10-06 14:10:26 DEBUG [glance-api] /etc/glance/glance-api.conf
2011-10-06 14:10:26 DEBUG [glance-api] ================================================
2011-10-06 14:10:26 DEBUG [glance-api] bind_host 0.0.0.0
2011-10-06 14:10:26 DEBUG [glance-api] bind_port 9292
2011-10-06 14:10:26 DEBUG [glance-api] debug True
2011-10-06 14:10:26 DEBUG [glance-api] default_store swift
2011-10-06 14:10:26 DEBUG [glance-api] delayed_delete False
2011-10-06 14:10:26 DEBUG [glance-api] filesystem_store_datadir /var/lib/glance/images/
2011-10-06 14:10:26 DEBUG [glance-api] image_cache_datadir /var/lib/glance/image-cache/
2011-10-06 14:10:26 DEBUG [glance-api] image_cache_enabled False
2011-10-06 14:10:26 DEBUG [glance-api] image_cache_stall_timeout 86400
2011-10-06 14:10:26 DEBUG [glance-api] log_file /var/log/glance/api.log
2011-10-06 14:10:26 DEBUG [glance-api] registry_host 0.0.0.0
2011-10-06 14:10:26 DEBUG [glance-api] registry_port 9191
2011-10-06 14:10:26 DEBUG [glance-api] s3_store_access_key <20-char AWS access key>
2011-10-06 14:10:26 DEBUG [glance-api] s3_store_bucket <lowercased 20-char aws access key>glance
2011-10-06 14:10:26 DEBUG [glance-api] s3_store_create_bucket_on_put False
2011-10-06 14:10:26 DEBUG [glance-api] s3_store_host 127.0.0.1:8080/v1.0/
2011-10-06 14:10:26 DEBUG [glance-api] s3_store_secret_key <40-char AWS secret key>
2011-10-06 14:10:26 DEBUG [glance-api] swift_enable_snet False
2011-10-06 14:10:26 DEBUG [glance-api] swift_store_auth_address https://146.141.78.76:8080/auth/v1.0
2011-10-06 14:10:26 DEBUG [glance-api] swift_store_container glance
2011-10-06 14:10:26 DEBUG [glance-api] swift_store_create_container_on_put true
2011-10-06 14:10:26 DEBUG [glance-api] swift_store_key testpass
2011-10-06 14:10:26 DEBUG [glance-api] swift_store_user system:root
2011-10-06 14:10:26 DEBUG [glance-api] use_syslog False
2011-10-06 14:10:26 DEBUG [glance-api] verbose True
2011-10-06 14:10:26 DEBUG [glance-api] ********************************************************************************
2011-10-06 14:10:26 DEBUG [routes.middleware] Initialized with method overriding = True, and path info altering = True
The IP address is the proxy ip where the authentication is done. Can someone please help me , I am not sure what is causing the problem.