load shot up to 52 and server dies

my server is not very stable currently, i really do not know what's going on here. it's been 3rd time the server automatically went down now. i actually saw how it went down this time.

just now, while i was watching my TOP results, i saw the load went up to 52 from 0.9 out of sudden, and then ssh died, server died as well.

i'm running a celeron 2.4G and host about 10 very small websites on this server, but i notice there is one website run a cgi forum, whenever my load goes high, i must see some lines about this forum from my TOP result, you can see my top result below.

i appreciate any suggestions. load shot up to 52 and server dies

 

 

 

 

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