After some uptime, my system hangs- it is not responsive to keyboard nor mouse. The red disk light is not on, and there is not response to CTRL-ALT-DEL or any other keypresses. This is on a one-hour old system. The last system, Kubuntu did the same thing. This started abouth two weeks ago, but has been becoming more frequent. The machine is a P4 256MG RD-RAM machine. Does this seem to be a hardware fault? How can I check it? Thanks. Note that I have a copy of Hiren Boot Disk, with many tools. I have tried to use them to find problems with the hardware, but have found nothing. Note, however, that I don't really know what I'm doing. Thanks. Dotan Cohen http://what-is-what.com 253