[ubuntu_studio] Flumotion's porter-http connect error

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http://ubuntuforums.org – I am running Ubuntu Studio 12.04 with flumotion. generally,flumotion service can worked,but after a period of time flumotion get crash. I find flumotion disconnect httpserver automatically,and porter-http disconnect occured. Server must reboot,and then get restore. This is my crash log: Part of Error message I have no idea how to fix it (Hardware)