From Square-Enix: Recently it has come to our attention that an unauthorized third-party software tool was made available to the public. This tool allows players to change their job from anywhere in Vana'diel. In response to this, an emergency maintenance was carried out on Sep. 4 13:00 to 16:00 (PDT) to prevent further use of this tool within FINAL FANTASY XI. As a result of an ongoing investigation, it has been determined that over 600 accounts will be either suspended or terminated for the malicious and intentional use of this third-party tool.
We would like to take this time to remind our players that the use of any third-party tools to change or modify the game in any way is strictly prohibited in the PlayOnline environment. We will continue to take any necessary actions against those individuals that we have confirmed to have used such tools.
Please note that by using these third-party tools, the consequences may extend beyond action being taken against your account. Some tools may cause character information to be altered, erased, or personal information to be leaked to unwanted third parties. If you come across a third-party tool over the internet, we ask that you please refrain from the download of such a tool, no matter how minor it may appear to be.
We thank you for your cooperation and understanding in this matter.