From: Belorion Date: 2005-03-08T05:03:06+09:00 Subject: Re: Problems connecting MySQL with Ruby > I believe that this has to do with MySQL changing its authentication protocol. Yes, if I recall correctly, Tomita Masahiro's MySQL-Ruby 2.5 library only works with MySQL < 4.1 (we use 4.0.20 at work just fine).