Error 1042 - Unable to connect to any of the specified MySQL hosts (no replies)

Hi you all.

I'm having a problem with my own app developed in VB.net 2010. First of all I'm going to give you my configuration to make you an idea of what I'm talking about.

OS: WindowsXP Pro SP3
MySQL Server: 5.5
Connector .NET: 6.4.4

First of all I configured file my.ini to accept remote connetions by adding the line bind-address=0.0.0.0 and I erased line that says skip-networking.

When I run my app localy, I login as root user and everything works fine. The problem came when I tried to remotely access to MySQL. I login as root user and everything works fine until the vb code executes the following:

DbGCATPacientes_PersonalespacientesTableAdapter.Fill(DbGCATPacientes_Personales.pacientes)

This line raises the Error 1042 - Unable to connect to any of the specified MySQL hosts

So I access the server via command line. I login without any problem and type in show proccesslist; to see the connections. There is a connection for the app. Grants for user root are all for *.* and for the database I created in mysql. And I also have a user 'root'@'%' with all privileges to ensure that remote hosts can access the database.

Where can be the problem? I don't understand, if I can login mysql without any problem, why or what raises this error and just for remote connection?

Thanks and waitting for an answer,
Gustavo