For some reason my server occasionally get's very high loads bringing it to a slow halt. Any ideas why this might be? nothing in top stats seems to point to anything apart from the high IOWAIT. Then IOWAIT suddenly drops back to zero and then in top I get this: With the CPU % at 93.3 for command http. Then cpanel will automagically restart cpsrvd and loads will eventually come back down again. Could this be a dos attack? Any ideas what commands I should use to see what's causing this? My forums software sends me a report to say 'MySQL server has gone away' - could that be a hint as to what it is? The whole thing lasts about 20 minutes or so and seems to be happening more frequently. Would appreciate any help on the matter.