On 9/27/11, Benjamin Smith <lists at benjamindsmith.com> wrote: > When booting a non-working system, it boots straight up to the boot prompt > (runlevel 3) without issue, and everything works fine. When the machine sits > idle for a period of time (ranging from 15 minutes or so and up) the HDD > becomes unreadable/unwritable and the system is useless for any purpose and > must be hard restarted with a full power cycle - it won't even shut down. I'm thinking I might have a similar problem with my test install of EL6. Initially I had dismissed it as a one-off but it has apparently locked up again. I'll be visiting it physically later and maybe have more information to share. However, it is also a 3400-series Xeon, the rest of the hardware are all cheaper hardware. What drives are you using in these servers?