Adam Not a network issue, it was my first guess as well.
If you ping the server from your location, is there any packet loss? If you run "top", has the server used a lot of its swap space, is the iowait (wa) figure high?
I didn't check for packet loss, and I can't tell now, since everything is fine after reboot.
iostat, load averaqe was ~ 90/90/90, all CPU's were at 100% obviously. Server did use some swap, but only around 50mb. There was plenty of unused memory.
I suspect that one of php scripts running via cron is poorly written. I have disabled every non-wordpress scheduled events and it is fine for now. If thats the case, I need to investigate this further on my own.
Is this real update going on in the background (hence slowdown) or it's just „placeholder” text?
Given that this is just more or less generic text and there was no real update in the background and this notice can be triggered whenever api call fails (and it could fail since server was really unresponsive) I need to rethink package/website limits.
Thank you for your clarification.