Simple Flood protection: ive seen this wanted in the forums so heres a very simple flood protection

all you need to do is replace #YOURCHANNEL with your channel and then when someone floods 5 lines in 5 seconds it will kick them

This Works for me ( there may be parts of the script that you dont need ( as i dont know alot about Hash Tables =S ))

on *:start: {
  ;makes a hash table with 150 slots when u start ur mIRC
  hmake flood 150
}
on *:text:*:#YOURCHANNEL: {
  if ($me isop $chan) {
    ;checks if im op
    hinc -u5 flood $nick 1
    ;this increases the value of amount of texts that user that used 
    ;the -u5 will unset that count after 5 seconds
    if ($hget(flood,$nick) > 5) {
      ;checks if the user has typed 5 lines 
      ban -u300 $chan $nick
      ;bans them the -u300 means it will unban after 300 seconds ( 5mins )
      kick $chan $nick 5 min Ban For Flooding!
      ;kicks the user
      hdel flood $nick
      ;unsets the users counts
    }
  }
}