Hi! > olaf$ ./mytop -h "" > > * username you specified "root" (default is "root") > > ... > > Access denied for user 'root'@'localhost'
What was your expectation here? Is there an account configured for user 'olaf' to access using socket authentication or is there a my.cnf file for user 'olaf'? Does "sudo mytop" work, are you able to access using the main database user the locally running database?

