Problems with Festival and Ubuntu

Hi everyone!

I am running asterisk on my ubuntu 7.04. I am trying out festival but I get all the time an error and don’t have any idea of what is going on.

festival working well
server Wed Nov 7 02:06:50 2007 : Festival server started on port 1314
client(1) Wed Nov 7 02:08:07 2007 : accepted from localhost
client(1) Wed Nov 7 02:08:08 2007 : disconnected

dialplan
exten => 123,1,Answer()
exten => 123,n,Festival(hello world)

asterisk running and the error

Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583
Nov 7 02:08:08 WARNING[1271]: utils.c:614 tvfix: warning negative timestamp 42.-72515583

Does anyone knows what is going on? is a problem of asterisk or festival?
Thanks!!!
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