Hi, I had my R to MySQL 5.0 connection working fine under 2.5.1 on Windows XP. My MySQL installation is local, not on a server and I could connect with: con <- dbConnect(MySQL(), dbname = "mydatabase", user="root", password="XX") I have updated to R 2.8.1 (RMySQL 0.7-2) but that same line of code yields: Error in mysqlNewConnection(drv, ...) : RS-DBI driver: (Failed to connect to database: Error: Access denied for user '? $5K??'@'localhost' (using password: YES) I have tried to follow the directions in the RMySQL.pdf whereby I created a file c:/my.cnf in which I have: [client] user = root host = localhost password=XX database=mydatabase And then use: m<-dbDriver("MySQL") con <- dbConnect(m,default.file="c:/my.cnf", group="client") But I get: Error in mysqlNewConnection(drv, ...) : RS-DBI driver: (Failed to connect to database: Error: Access denied for user 'client'@'localhost' (using password: YES) (Note that I did also have some trouble with installation of the library where I originally got warnings "MySQL is not installed according to a registry search" etc so perhaps the problems are partly related to the installation process) Could a more savvy user than me give me some guidance? Zev -- Zev Ross ZevRoss Spatial Analysis 120 N Aurora, Suite 3A Ithaca, NY 14850 607-277-0004 (phone) 866-877-3690 (fax, toll-free) zev at zevross.com