A giood flood protection addon will. This one is EXTREMELY basic:

Code:
on *:TEXT:*:?: {
  inc -u5 $+(%,text,$nick)
  if ($eval($+(%,text,$nick),2) > 5) ignore -u600 $nick
}


This will simply ignore a user for 10 minutes who has sent more than 5 lines of text to you in 5 seconds time.

DALnet #Helpdesk
I hear and I forget. I see and I remember. I do and I understand. -Confucius