its a mod that does that... do u have mods like ladders or something?.
take off all the mods... than putt 1 by 1 mods in there and u will see wich mod is doing that.... there is no other way to detect it.... so better start right away... we cant do anything more
now u know its not the mods..... if u join other server do u still have the same problem?.... if yes than u should check your connection/pc, if the problem is gone its the server and u can reinstall the server... if that does not fix the problem.... your host sucks.
Ownemall just has some new server for sale, i tested it and the quality is perfect
Posting the log file (as attachment if large) can help us narrow down the problem.
Start ruling out mods by completely removing all of them and running stock. Test to see if problem persists.
If the problem still occurs without mods then it is likely host/connection problems or misconfigured patches.
If the problem is gone, start by adding ONE mod at a time back into the game and test it. Until the problem happens again and you know the culprit mod.