My BigBrother config file :

MySQL = true   #If true, uses MySQL. If false, uses Sqlite
stickItem = 280   #The item used for /bb stick
mysqlDB = jdbc:mysql://localhost:3306/minecraft   #DB for MySQL (if applicable)
engine = INNODB   #Engine for the Database (INNODB is recommended)
autoWatch = true   #Automatically start watching players
defaultSearchRadius = 2   #Default search radius for bbhere and bbfind
restoreFire = false   #Restore fire when rolling back
flatFileLogs = false   #If true, will also log actions to .logs (one for each player)
mysqlUser = minecraft
mysqlPass = ********
maxRecords = 10000000   #The maximum number of records that you want in your database (-1 to disable)
cleanseAge = 1d12h   #The maximum age of items in the database (can be mixture of #d,h,m,s) (0s to disable)
sendDelay = 4   #Delay in seconds to batch send updates to database (4-5 recommended)

--------------------

BigBrother error :

2011-03-09 08:25:25 [SEVERE] [BBROTHER] MySQL SQLException on Creation
java.sql.SQLException: Access denied for user 'minecraft'@'127.0.0.1' (using password: YES)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:946)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885)
        at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3421)
        at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1247)
        at com.mysql.jdbc.Connection.createNewIO(Connection.java:2775)
        at com.mysql.jdbc.Connection.<init>(Connection.java:1555)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
        at java.sql.DriverManager.getConnection(DriverManager.java:620)
        at java.sql.DriverManager.getConnection(DriverManager.java:200)
        at me.taylorkelly.bigbrother.datasource.ConnectionService.getConnection(ConnectionService.java:77)
        at me.taylorkelly.bigbrother.datasource.JDCConnectionDriver.connect(JDCConnectionDriver.java:41)
        at java.sql.DriverManager.getConnection(DriverManager.java:620)
        at java.sql.DriverManager.getConnection(DriverManager.java:222)
        at me.taylorkelly.bigbrother.datasource.ConnectionManager.createConnection(ConnectionManager.java:27)
        at me.taylorkelly.bigbrother.BigBrother.onEnable(BigBrother.java:95)
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:118)
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:414)
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:187)
        at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:83)
        at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:61)
        at org.bukkit.craftbukkit.CraftServer.reload(CraftServer.java:205)
        at org.bukkit.command.SimpleCommandMap$ReloadCommand.execute(SimpleCommandMap.java:196)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:80)
        at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:183)
        at net.minecraft.server.NetServerHandler.c(NetServerHandler.java:619)
        at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:582)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:576)
        at net.minecraft.server.Packet3Chat.a(SourceFile:24)
        at net.minecraft.server.NetworkManager.a(SourceFile:230)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:75)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:100)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:357)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:272)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)
2011-03-09 08:25:25 [SEVERE] [BBROTHER] Could not establish SQL connection. Disabling BigBrother

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My MySQL version :

minecraft@omg:/home/minecraft/bukkit$ mysql --version
mysql  Ver 14.14 Distrib 5.1.55, for debian-linux-gnu (x86_64) using  EditLine wrapper

--

The proof I can connect to MySQL using my login/pass

minecraft@omg:/home/minecraft/bukkit$ mysql -uminecraft -hlocalhost -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 167877
Server version: 5.1.55-rel12.6 (Percona Server (GPL), 12.6 , Revision 200)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| minecraft          |
+--------------------+
2 rows in set (0,00 sec)

mysql> use minecraft;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> show tables;
+---------------------+
| Tables_in_minecraft |
+---------------------+
| iBalances           |
| items               |
| jail_prisoners      |
| jail_zones          |
| logblock            |
| logblock-extra      |
| mcgroups            |
| mcrights            |
| mctemplateplugins   |
| mcusers             |
| settings            |
| users               |
+---------------------+
12 rows in set (0,00 sec)

mysql> WHY BIGBROTHER WON'T CONNECT FFS ?