MQ v7.0.1.3 problem with PubSub

Today I met problem with PubSub after we had problem with disk space I found that PubSub not working on queue manager. I checked and PubSub was enabled on this queue manager.
When I tried to check lists of Topics or Subscriptions I got error loke - PubSub inhibited

My solution was restart of queue manager, also looks like it was fixed in MQ v 7.0.1.6.

Error from my log file:

-------------------------------------------------------------------------------
03/11/13 11:40:57 - Process(16412.1) User(mqm) Program(amqfqpub)
                    Host(XXXX)
AMQ5855: WebSphere MQ Publish/Subscribe broker ended.

EXPLANATION:
An attempt has been made to run the broker (QMGRNAME) but the broker has ended
for reason '9E3:MQRC_PUBSUB_INHIBITED'.
ACTION:
Determine why the broker ended. The message logs for the queue manager might
contain more detailed information on why the broker cannot be started. Resolve
the problem that is preventing the command from completing and reissue the
strmqbrk command.
----- cmqxfcxc.c : 1329 -------------------------------------------------------
03/11/13 11:41:07 - Process(5293.1) User(mqm) Program(amqzxma0)
                    Host(XXX)
AMQ5008: An essential WebSphere MQ process 16412 (amqfqpub) cannot be found and
is assumed to be terminated.

EXPLANATION:
1) A user has inadvertently terminated the process. 2) The system is low on
resources.  Some operating systems terminate processes to free resources.  If
your system is low on resources, it is possible it has terminated the process
so that a new process can be created.
ACTION:
WebSphere MQ will stop all MQ processes.  Inform your systems administrator.
When the problem is rectified WebSphere MQ can be restarted.