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James Wonnacott wrote: > Every 15 minutes or so it refuses (or drops existing) connections (smtp, > pop3, ssh) pings become slow (anything from 1-100ms). tailing syslog or > messages suggests that nothing is happening, top shows nothing special. > then after about 5 minutes it just comes back and pretends nothing > happened. pings to it return in <1ms and all is fine and dandy again. Check /var/log/syslog for kernel or module errors. Linux documents many types of hardware failure there as well as dmesg. If it's headless, I've used the following script to mail myself a top stat every minute to track down processes using too many resources when balancing servers. [crontab] * * * * * /root/grab-top.sh [/root/grab-top.sh] TERM=linux export TERM top -b -n 1 -- Simon Avery -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html