[ubuntu] Server crashes, while SMB-Access

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http://ubuntuforums.org – Hello, I've got a problem with my Ubuntu Server 10.04. A raid5 (mdadm) and smbd is running. Sometimes there is no problem to access the network shares. But sometimes (mostly while writing a lot of data) the server freezes and doesn't react any more. Only a reset helps. If I don't access the shares, the server runs without any problem. The RAM seems ok (checked with Memtest) and the filesystem itself also. I created a big archive (via terminal) about 200gb and the server was running. The system ran (about one year) without any problem. Syslog: Quote: kernel: [ (Hardware)