Asterisk ended with exit status 135

Hi,
I am running asterisk 1.4.11 on Fedora 2.6.20-1.2933.fc6. It was running good for sometime and suddenly it has started giving me errors.
When i start asterisk i get the following:
[root@voip ~]# service asterisk start
Starting asterisk:

                                    [  OK  ]

[root@voip ~]# /usr/sbin/safe_asterisk: line 111: 5238 Bus error (core dumped) nice -n $PRIORITY ${ASTSBINDIR}/asterisk ${CLIARGS} ${ASTARGS} >&/dev/${TTY} </dev/${TTY}
Asterisk ended with exit status 135
Asterisk exited on signal 7.
Automatically restarting Asterisk.

[root@voip ~]# mpg123: no process killed
/usr/sbin/safe_asterisk: line 111: 5259 Bus error (core dumped) nice -n $PRIORITY ${ASTSBINDIR}/asterisk ${CLIARGS} ${ASTARGS} >&/dev/${TTY} </dev/${TTY}
Asterisk ended with exit status 135
Asterisk exited on signal 7.
Automatically restarting Asterisk.

nothing is logged in /var/log/asterisk/message

Has any one seen this before?

I tried older versions of asterisk too but same error.

Help will be appreciated.

Thanks.

Take a look at doc/backtrace.txt and post a backtrace of the crash to bugs.digium.com.