Error in sphider plus "MySQL server has gone away" , when try to index or re-index some urls ?

Hi ,i faced some problems before at sphider plus but after searching and tried to read other problems that faced users and ofcourse with "Tec" help i succeed to resolve these problems , but this time for this problem i can't find a resolve for it. so i put a new topic.

This error appear when using cronjobs only until now , and unlike the same problem i found in sphider topics , when this error appear the site stop index totally ,mean this error appear before it can index or re-index any web pages , and this error appear specially when try to re-index a website that already indexed ,and as i said this problem appear with me from cronjobs only until now ...

so , i hope to know what is the cause of this error ??
and Is there any solution for it ??

any ideas !!

This is the first i saw this issue, but i have it too. I see the message for each keyword that is picked up.

This error means that Mysql owerflooded with inserts and refuse works. Or it may be couse to large query.

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