[ubuntu] Ubuntu 10.04-server stopped detecting all cores

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http://ubuntuforums.org – Hi.I started to experience an issue, where my linux stops getting one cpu core. Even /proc/cpuinfo and /sys/devices/system/cpu returns 5 cores. Mi server has 6 CPU cores. I confirmed that is all about an ubuntu issue, since it happends after a while(about days). A live example can be found at http://kevinguanchedarias74.tk/phpsysinfo I can't continue restarting the server each time this happends. Since it's running some services used by some people... (Hardware)