Michael Dance: Well I've noticed that we don't have it on InterWorx yet, and it would be great from locking yourself out if you have the "Ignore list" where you have Trusted IPs and block IPs" when say using the FTP as-well as locking out the bad guys trying to get into your accounts / etc.
There was a thread about it in 2006: http://forums.interworx.com/threads/1642-Brute-Force-Secure