[ubuntu] Xmbcbuntu, no network sharing (urgent)

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http://ubuntuforums.org – Hi. I installed Xbmcbuntu a while back and everything was going just fine. I have my movies and TV series on another computer, but accessing this over the network was not a problem. Downloading covers and metainfo was not an issue either. When I turned on the computer today I suddenly can't access my media files even though absolutely nothing have changed. I can access my main computer (the one with the media) with every other windows 7 computers, even with the same network cable. I've tried restarting my router with no luck and I've restarted Xmbcbuntu several times as well. If I enter the (Hardware)