[Observium] Apache hanging (probably not Observium issue but Apache issue)

Hi!

I've started to see that on specific actions from within the Observium GUI Apache will lock up. It seems random what action it is, but all Apache workers stop responding and it takes forever to restart Apache afterwards (5-10 min to do a service httpd restart).

Anyone had the same issue ?

I see no errors in the Apache logs and no errors in Observium logs, nor in other logs on the LInux server (CentOS 7.2). Observium polling still run as usual, so it's just the web interface stopping.

/Jesper