asterisk users - Aug 2004 - error: CDR on channel '<unknown>' has not started

Hi,
I installed asterisk-addons and configured it so that the cdr is done on a mysql
database. Everything was fine, until I originated outgoing calls using the 
manager API. The call itself is performed perfectly, but when I hangup, I get 
the following warning on asterisk CLI:

Aug 31 14:29:23 WARNING[-308995152]: cdr.c:331 ast_cdr_end: CDR on channel 
'<unknown>' has not started
Aug 31 14:29:23 WARNING[-308995152]: cdr.c:331 ast_cdr_end: CDR on channel 
'<unknown>' has not started
Aug 31 14:29:23 WARNING[-308995152]: cdr.c:478 ast_cdr_post: CDR on channel 
'<unknown>' lacks start
Aug 31 14:29:23 WARNING[-308995152]: cdr.c:118 ast_cdr_free: CDR on channel 
'<unknown>' lacks start

And the cdr record about this call is this:

|          |           |             |     |           |          |           |
       |            |            |                | 1969-12-31 21:00:00 | 
1093973363 |       0 | UNKNOWN     |        0 |

the date/time is always 1969-12-31/21:00:00. What could be wrong? I appreciate 
any help... Thank you very much