Server down too much (30-40%)

My server load has been 10 most of the day, it is back at 0,30 again. Apache using about 7-10% CPU - I have about 600 processes running (limit at 500 in php.ini). My pages are unreachable (or very very slow to load9.

Is my problems caused by all the processed/connections?

I run a few image hosts with alot of hits - it is those who is generating all the processes/connections.

Any suggestions what to do?

 

 

 

 

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