Hi, Without any update, hardware/software modification, etc... one of my systems "Hourly restart" problem started again. Currently, I counted 5 restarts at 59th minute. No log entry, no console error, nothing really interesting. If I do not see camera records with my own eyes, I'll suspect about someone from D.C. hardreseting the box. Now, I guess /var failed mounting and ssh not available. Maybe next hour restart does a magic... Last time, a kernel update solved hourly restart problem. Before loosing access, I checked and saw a new kernel with -21 ending number (x86_64, forgot to mention) and waiting for XFS module to be ready (Well, I wish I had left it ext3) After that, perhaps update will solve the problem again, but why? Last time I stopped all crons, unneeded services, remote access, etc.. Put a man in front of the monitor and made him monitor everything. Only thing he saw was a welcoming BIOS without any sign at the 60th minute. Replaced power cords, power supply, some disks, RAM modules, etc... Currently I have the last recovered remote logs of temperature and voltage sensors of the system, all seems fine, nothing suspicious. I am out of ideas. I have many gentoo boxes on the almost same hardware and a few centos boxes. Only this one failes continuously... I'd like to hear advice and suggestions about how to debug / repair this situation. Thanks. P.S.: Complete hardware replacement plan is currently in action, new hardware will be ready soon but I'm not so sure about hardware failure. Why did it stopped last time after a simple kernel update?