BIND9 server lockup

[Tomas Targownik]

Bind9 process freezes once/twice daily. Process is still present but will not respond to any queries. The process will not gracefully shut down, requires 'kill -9' in order to stop it. Restarting the process restores normal operation.
Problem first occurred after upgrading from bind9 version 9.7.0.dfsg.P1-1ubuntu0.3 to version 9.7.0.dfsg.P1-1ubuntu0.4.

Problem seems identical to-
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=601830
and
https://www.isc.org/software/bind/advisories/cve-2011-0414

Tried the "-n1" workaround as described in the above ISC web page, but the problem still occurs.

Resolved the issue by downgrading to bind9 package version 9.7.0.dfsg.P1-1.

---
Description: Ubuntu 10.04.3 LTS
Release: 10.04

bind9:
  Installed: 1:9.7.0.dfsg.P1-1
  Candidate: 1:9.7.0.dfsg.P1-1ubuntu0.4
  Version table:
     1:9.7.0.dfsg.P1-1ubuntu0.4 0
        500 http://ftp.iinet.net.au/pub/ubuntu/ lucid-updates/main Packages
        500 http://ftp.iinet.net.au/pub/ubuntu/ lucid-security/main Packages
 *** 1:9.7.0.dfsg.P1-1 0
        500 http://ftp.iinet.net.au/pub/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status