I tested version 1.0 and 1.1 of Account Enhancer on few macs and it worked fine but unfortunately it had some very bad bugs, which I and the users discovered later. I am very sorry for the problems Account Enhancer caused on some computers. To release Accounts Enhancer with these bugs was a big mistake and I really regret it. I have now worked for few days with rewritting the application and testing it on more computers. If you are not sure if you should use Accounts Enhancer please create a new temporary account and test it on this account... or you can read the article in Apple Support Database to manually change short names (http://docs.info.apple.com/article.html?artnum=106824). Regards, Krstofer Szymanski.