Problem with nagios trends using nsca addon

Hello,

A week ago I installed nasc addon. After a few day I saw that there is a problem with nagios trends. When I opened the trend for a host or service it was correct only afrer 00:00 the same day. Before that in was green, like nothing was happened, but I now that the host was down yesterday. After stopping the nsca the problem was gone.

Can someone tell me what could be the problem?

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