Hi,

is there any way to prevent massive CPU usage?
For example, on my VPS I use about 2-3% of CPU. But for about a week I see very slow speed of all websites on my server.
I looked at "top" and I see this loads - load average: 7.43, 3.57, 1.83
Somebody use a lot of server power...

Check the load on your host -- it's shown in the platform manager. If it's not high, then check your swap usage -- this can be caused by processes waiting for disk I/O.

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/ Peter