Tracebacks from Displays/Summary and Displays/System

[https://www.google.com/accounts/o8/id?id=AItOawmgjcCg7lAJ6ZhqeaZka53jw8AUv8fpG2E]

On Gentoo, with bcfg2 trunk and Django 1.1.1 I get the following traceback from both Displays/System? and Displays/Summary?:

Environment:

Request Method: GET
Request URL: http://localhost/bcfg2/displays/sys-view/
Django Version: 1.1.1
Python Version: 2.6.2
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.admin',
 'Bcfg2.Server.Reports.reports']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.middleware.doc.XViewMiddleware')


Traceback:
File "/usr/lib64/python2.6/site-packages/django/core/handlers/base.py" in get_response
  92.                 response = callback(request, *callback_args, **callback_kwargs)
File "/usr/lib64/python2.6/site-packages/Bcfg2/Server/Reports/reports/views.py" in display_sys_view
  193.     client_lists = prepare_client_lists(request, timestamp)
File "/usr/lib64/python2.6/site-packages/Bcfg2/Server/Reports/reports/views.py" in prepare_client_lists
  308.         stale_all_client_list = Client.objects.active(timestamp).filter(id__in=[x[0] for x in results if datetime.now() - x[1] > timedelta(days=1)])

Exception Type: TypeError at /bcfg2/displays/sys-view/
Exception Value: unsupported operand type(s) for -: 'datetime.datetime' and 'unicode'

This is using sqlite3 backend, with two systems (including the server itself) reporting in, one is in clean state, the other in dirty state:

$ bcfg2-reports -a
nat-128.vmware           2009-11-10 16:44:05   clean   
tholo-xps.thereinc.com   2009-11-10 16:10:25   dirty   

[solj]

Fixed in [6028fc0ee909c781633cef620d475ffedb482aca] (SVN r5577).