Syslog have many of these:>>> df_complex-free.rrd: illegal attempt to update using time 1467087313 when last update time is 1481819242 (minimum one second step))

I hope this is the correct topic for posting.
I've had a check on syslog thingy and see its filled up with hundreds of lines of the below:

Zitat

Jun 28 06:25:13 raspberrypi rrdcached: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/memory/memory-free.rrd) failed with status -1. (/var/lib/rrdcached/db/localhost/memory/memory-free.rrd: illegal attempt to update using time 1467087323 when last update time is 1481819242 (minimum one second step))
Jun 28 06:25:13 raspberrypi rrdcached: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/df-media-fa36508a-b3c4-4499-b30a-711dd5994225/df_complex-free.rrd) failed with status -1. (/var/lib/rrdcached/db/localhost/df-media-fa36508a-b3c4-4499-b30a-711dd5994225/df_complex-free.rrd: illegal attempt to update using time 1467087313 when last update time is 1481819242 (minimum one second step))
Jun 28 06:25:13 raspberrypi rrdcached: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/df-media-fa36508a-b3c4-4499-b30a-711dd5994225/df_complex-used.rrd) failed with status -1. (/var/lib/rrdcached/db/localhost/df-media-fa36508a-b3c4-4499-b30a-711dd5994225/df_complex-used.rrd: illegal attempt to update using time 1467087313 when last update time is 1481819242 (minimum one second step))

I've read that the time server could be an issue, but not sure how to procede, but it looks to my inexperienced eye as if something tries to update, but won't.
My Raspberry constantly goes back to the wrong date, so the time issue may very well be the problem. I followed other posts to update the time, but after a reboot, it always goes back to January, although the actual time is sometimes correct.