Yeahh, but not only the logs, the agent internal time too.
I created new certificates at 2015-11-22 00:00
I got the agent log message :
2015-11-21 23:24:41 Error: CAgentSecurityModule [Thread 1e2c]: Certificated user verification failed with: NodVerifyCertificateChain failed: NodVerifyTrustResult: 6, NVT_NotTrustedRoot, X509ChainStatus: 0x1, X509CSF_NotTimeValid
it took some Time till i got that the agents have to wait an hour till the Cert is valid.