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[LUG] Dozing server

 

I have a strange problem with a server which seems to doze off for 5 
minutes or so once in a while.

Its fairly old (4 years) running Mandrake 10.0,  2.6.3 kernel

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.

Any ideas.....

Thanks
James

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