About call file can't call,please help me!

my system have many call file need to callout,Occasionally,some call file did not processed,and the file is still exist,when i restart the asterisk,the file call out,my Platform is :asterisk 1.4.22,fedora 7,zaptel 1.4.11,anyone can help me?please

Start asterisk.
Start console to see what happens.
Set verbose to 50 or something alike.
set verbose 50
Open other console and go to directory with call files.
cd /var/spool/asterisk/outgoing/
touch {some of existing files}