If I remember the many heated discussions last year when the devs had to reluctantly agree to give up automatic searches , I think they had to be ALL banned because there was no way to tell the one or two legit retries from the abusers.

search for posts by partial poster name trap_jaw and search term "automatic requeries" for more details about the coding probelms and trials. If you can read CVS logs, try these links

http://core.limewire.org/servlets/Br...ev&paged=false
http://core.limewire.org/servlets/Br...vs&paged=false

sure would be good to see efficient automatic researches. LW is open source: you can build your own CVS version, but others ban certain levels of retry.