linux spontaneously rebooting?

I have a dell optiplex gx150 and tried to install xubuntu and knoppix from the live cds. Have an atheros wifi pci card. Problem is once either system is installed and I try to update or upgrade the system thru synaptic, or even in other cases, the system reboots spontaneously. I though linux was safe from hackers. Could this be a hacker or possibly some sort of hardware problem unique to this computer?

2 Responses to linux spontaneously rebooting?

  1. ercferret18

    don’t think it’s a hacker… maybe reinstall… or maybe it is a problem with the computer

    Report Spam/Abuse

  2. My guess is operator error

    Report Spam/Abuse

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