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We have installed ZCS 6.0.9 on a RHEL 5.2 cluster. Occasionally and temporarily, the system leaves attach files to emails and waits to finalize a process for some time.
Suddenly, the problem goes away and can return to work normally.
I've looked at the logs and the top command but found nothing.
Bugzilla
Wiki
Source
Cannot attach file in messages 
Linear Mode
