On server with 1023 services discovered, changes fails after 110 seconds

Hi to all i am trying to delete some services on a host with 1023 services discovered by Check_mk agent, but always get Activating changes fails after 110 seconds…, it happens only on that host, i am runnig check_mk 1.5.0op12
I have change check mk period to 1 day, just to try if thar process perform a high load on the server but i got same results
any clues or change to perform on configuration in order to solve it
Thank in advance for any help