What version of swift are you using?
swift-1.13.1.rc2 could have permissions errors,
while we included a patch in the RDO icehouse swift-1.13.1 release to fix
http://pad.lv/1302700 which on first glance could be related?
I'm using 1.13.1-1.fc21 (I'm using Fedora) as you can see:
# yum info openstack-swift
Loaded plugins: priorities
196 packages excluded due to repository priority protections
Name : openstack-swift
Arch : noarch
Version : 1.13.1
Release : 1.fc21
So the fix should already be present right?