[2013-06-08 12:03:42,898: INFO/MainProcess] Task czokomin.users.tasks.last_uid[56140c4e-4e77-42e7-b76b-a8b5d6557747] succeeded in 0.000471115112305s: 100
[2013-06-08 12:03:45,940: INFO/MainProcess] Got task from broker: czokomin.users.tasks.last_uid[2ad536dc-e67d-4917-a28f-b49556249385]
[2013-06-08 12:03:45,975: INFO/MainProcess] Task czokomin.users.tasks.last_uid[2ad536dc-e67d-4917-a28f-b49556249385] succeeded in 0.000485897064209s: 100
[2013-06-08 12:03:48,943: INFO/MainProcess] Got task from broker: czokomin.users.tasks.last_uid[0562cdc4-47f1-41b2-a247-f315dfa9d63c]
[2013-06-08 12:03:48,969: INFO/MainProcess] Task czokomin.users.tasks.last_uid[0562cdc4-47f1-41b2-a247-f315dfa9d63c] succeeded in 0.000464916229248s: 100
[2013-06-08 12:03:51,929: ERROR/MainProcess] Received unregistered task of type 'czokomin.users.tasks.last_uid'.
The message has been ignored and discarded.

Did you remember to import the module containing this task?
Or maybe you are using relative imports?
More: http://docs.celeryq.org/en/latest/userguide/tasks.html#names

The full contents of the message body was:
{'utc': True, 'chord': None, 'args': ('dd',), 'retries': 0, 'expires': None, 'task': 'czokomin.users.tasks.last_uid', 'callbacks': None, 'errbacks': None, 'taskset': None, 'kwargs': {}, 'eta': None, 'id': 'd77b46c4-9149-43bc-b3bf-482095bc5cb7'} (215b)
Traceback (most recent call last):
  File "/root/czokomin-celery/environment/lib/python2.7/site-packages/celery/worker/consumer.py", line 438, in on_task_received
    except InvalidTaskError, exc:
KeyError: 'czokomin.users.tasks.last_uid'
[2013-06-08 12:04:03,401: INFO/MainProcess] Got task from broker: czokomin.users.tasks.last_uid[029e4750-f05d-44bb-935d-271c4527f8a6]
[2013-06-08 12:04:03,430: INFO/MainProcess] Task czokomin.users.tasks.last_uid[029e4750-f05d-44bb-935d-271c4527f8a6] succeeded in 0.000460863113403s: 100
[2013-06-08 12:04:05,410: ERROR/MainProcess] Received unregistered task of type 'czokomin.users.tasks.last_uid'.
The message has been ignored and discarded.

Did you remember to import the module containing this task?
Or maybe you are using relative imports?
More: http://docs.celeryq.org/en/latest/userguide/tasks.html#names

The full contents of the message body was:
{'utc': True, 'chord': None, 'args': ('dd',), 'retries': 0, 'expires': None, 'task': 'czokomin.users.tasks.last_uid', 'callbacks': None, 'errbacks': None, 'taskset': None, 'kwargs': {}, 'eta': None, 'id': 'f1186cec-2827-4710-b3ef-66db117ebfa0'} (215b)
Traceback (most recent call last):
  File "/root/czokomin-celery/environment/lib/python2.7/site-packages/celery/worker/consumer.py", line 438, in on_task_received
    except InvalidTaskError, exc:
KeyError: 'czokomin.users.tasks.last_uid'
[2013-06-08 12:04:12,015: INFO/MainProcess] Got task from broker: czokomin.users.tasks.last_uid[5106d26e-8036-4e8d-8a55-05a21fc29477]
[2013-06-08 12:04:12,030: INFO/MainProcess] Task czokomin.users.tasks.last_uid[5106d26e-8036-4e8d-8a55-05a21fc29477] succeeded in 0.000738859176636s: 100
[2013-06-08 12:04:15,055: INFO/MainProcess] Got task from broker: czokomin.users.tasks.last_uid[230c380d-cc5b-40be-bb56-1bdef1aae92f]
[2013-06-08 12:04:15,058: INFO/MainProcess] Task czokomin.users.tasks.last_uid[230c380d-cc5b-40be-bb56-1bdef1aae92f] succeeded in 0.00111103057861s: 100