Note that there's nothing after the semicolon. (?)A database engine mysql was upgraded to version 4.1 or above. This version
fully implements the national characters support. Since a number of values
in Plesk is restricted by case-insensitive unqueness, they became
conflicting in the new conditions. To follow the unqueness requirements,
they have been modified:
As far as I know CentOS 4.3 was already running 4.1.x natively (not the ART package, but CentOS's own). I see /etc/my.cnf has old_passwords=1. Should it? I think the e-mail is just a bit weird.