On Thu, 2007-12-06 at 15:32 +0100, wwp wrote: > Hardware just works fine apparently. And if I swap the internal > hard-disk to the one on which my old FC5 system is used, I can't get > the periodical short hangs (tried for a couple of hours). That suggests a few possible things: A configuration issue that's different on the other drive. A hard drive hardware error that happens when some part of the drive is accessed, perhaps an area not normally accessed by you but periodically by a system task. Try a smart test on the drive (man smartctl). Power supply issues. Your computer power supply having a problem, that it doesn't work well enough all the time, and your two different hard drives having slightly different power requirements (enough to be a problem). -- (This computer runs FC7, my others run FC4, FC5 & FC6, in case that's important to the thread.) Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.