This problem only occured when pytz is installed. It's still strongly recommended to define the correct time zone in TIME_ZONE in order to use pytz' implementation and not the approximation based on system time.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@17134 bcc190cf-cafb-0310-a4f2-bffc1f526a37
After this commit, timezones.AdminTests will raise warnings because the sessions contrib app hasn't been upgraded to support time zones yet.
This will be fixed in an upcoming commit.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@17117 bcc190cf-cafb-0310-a4f2-bffc1f526a37