[DeitY]

Maybe the problem is that server has 150++ players every day and massive command spam (junkbuster is active but he kicks only for 6-7 commands in a row) and it crashes server,or too many messages?

Could it be ackslimit?

Its not a server restart because all players loose connection but server is working,in server log they just all drop,but server is working.Then after 5 mins he randomly unloads plugins and then server comes online again but No commands are working,like 5% of it.

Wierd.