RRD weird bahavior

[mbedyn]

hello… I have noticed strange things in RRD since last upgrade
Graphs has very large peeks, but such traffic is impossible in my environment.. Attached screenshot

Another question is about Firewall logs... logs are clickable links now.. and they showing the rule that calls the alert, but some alerts do  shows nothing.. Attached some screens

???

[Borage]

I also had a large peak after the upgrade, but it disappeared after a couple of days.