Ntp and scheduller problem

Hi all,

I’m wondering if anyone else have problems with ntp clients collecting time from ntp server. Sometimes it sinchronizes the time and sometimes not. I have this problem on 50% of RouterOS. Main Router is set to be ntp server and there is no problem, but other Routers have problems and there are no rules when and which Router will fail to collect time. This is causing scheduller not to work and bringing me a lot of trouble (like p2p rules etc will not work).
Checked firewall and nothing there is stoping traffic to addresses and 123 port.
All routers are 2.9.28.
This problem is introduced from upgrading for 2.9.27 to 2.9.28.

Cheers…