[Dovecot] dovecot 2.0.4 imap service error

[Nishant Limbachia]

Just upgraded from 2.0.3 to 2.0.4 and getting this message in the logs
(repeated several times)

master: Error: service(imap): child 9631 killed with signal 11

I'm using mdbox and had no problems using 2.0.3 until I upgraded this
morning.  I understand there were some Index changes and I'm not
keeping indexes in a separate directory.  but still I've made this
change to  configuration file.

mail_location = mdbox:/var/mail/mdbox/%u:INDEX=/var/mail/mdbox/%u

instead of

mail_location = mdbox:/var/mail/mdbox/%u

Here's the dovecot.log from last few minutes.

Sep 27 16:08:14 imap: Debug: Added userdb setting:
mail=mdbox:/var/mail/mdbox/raghu
Sep 27 16:08:14 IMAP(raghu): Debug: Effective uid=xxxx, gid=xxx,
home=/home/raghu
Sep 27 16:08:14 IMAP(raghu): Debug: quota: No quota setting - plugin disabled
Sep 27 16:08:14 IMAP(raghu): Debug: Namespace : type=private, prefix=,
sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes
location=mdbox:/var/mail/mdbox/raghu:INDEX=/var/mail/mdbox/raghu
Sep 27 16:08:14 IMAP(raghu): Debug: fs: root=/var/mail/mdbox/raghu,
index=, control=, inbox=
Sep 27 16:08:14 master: Error: service(imap): child 9684 killed with
signal 11 (core dumps disabled)
Sep 27 16:08:14 imap-login: Info: Login: user=<raghu>, method=PLAIN,
rip=192.168.1.5:43444, lip=192.168.1.2:10943, TLS, TLSv1 with cipher
AES256-SHA (256/256 bits)
Sep 27 16:08:14 imap: Debug: Loading modules from directory: /usr/lib64/dovecot
Sep 27 16:08:14 imap: Debug: Module loaded:
/usr/lib64/dovecot/lib10_quota_plugin.so
Sep 27 16:08:14 imap: Debug: Module loaded:
/usr/lib64/dovecot/lib11_imap_quota_plugin.so
Sep 27 16:08:14 imap: Debug: Module loaded:
/usr/lib64/dovecot/lib11_trash_plugin.so
Sep 27 16:08:14 imap: Debug: Module loaded:
/usr/lib64/dovecot/lib20_autocreate_plugin.so
Sep 27 16:08:14 imap: Debug: Module loaded:
/usr/lib64/dovecot/lib20_fts_plugin.so
Sep 27 16:08:14 imap: Debug: Module loaded:
/usr/lib64/dovecot/lib21_fts_squat_plugin.so
Sep 27 16:08:14 imap: Debug: Added userdb setting:
mail=mdbox:/var/mail/mdbox/raghu
Sep 27 16:08:14 IMAP(raghu): Debug: Effective uid=1000, gid=100,
home=/home/raghu
Sep 27 16:08:14 IMAP(raghu): Debug: quota: No quota setting - plugin disabled
Sep 27 16:08:14 IMAP(raghu): Debug: Namespace : type=private, prefix=,
sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes
location=mdbox:/var/mail/mdbox/raghu:INDEX=/var/mail/mdbox/raghu
Sep 27 16:08:14 IMAP(raghu): Debug: fs: root=/var/mail/mdbox/raghu,
index=, control=, inbox=
Sep 27 16:08:14 master: Error: service(imap): child 9686 killed with
signal 11 (core dumps disabled)