My system reboots at random times, averaging two to six reboots in a 24 hour period. I am running a dual boot system (SuSE Linux 7.3, 2.4.10-4GB kernel and Windows XP) with 1 CPU (1.6 GHz Pentium 4), 256 MB RAM, plenty of disk space. Actions taken: I have installed a new UPS, no change. I can reboot under Windows and no reboots occur. Originally running a default kernel, I rebuilt the kernel, omitting all Watch Dog elements. There are no crons defined. The messages file looks clean... no errors prior to reboot. 'Sar' output and captured 'top' output does not seem to indicate a resource problem, although, available memory does get down to the 3-4 MB range prior to some, but not all, of the reboots. Question: What additional files/logs are available to help diagnose the cause? Are there additional actions which can be taken to identify / eliminate the problem? Thanks, for all suggestions. Jim Jim Goode 972-964-4831 jimgoode@quixnet.net