Connection isn't released on MyConnection.Close

[Karel Boek]

Environment:
- MySQL 4.1.7
- Windows 2003 Server
- IIS 6.0
- .NET Framework 1.1
- VB.NET
- MySQL Connector/Net (ADO.NET driver for MySQL) version 1.0.2

Problem:
Connection to a MySQL database is made and values are read into a DataReader, a DataGrid or a DataList. After every connection made, I close the connection and dispose it. However, after a while the error message "too many connections" appears. Using MySQL administrator, I find my web application having 100 (the default) connections to the server.

Question:
What is happening here? It seems like my code doesn't really close the connection to the MySQL server. Is that a bug or is it my code (most likely)?

Code:
Dim QueryString As String = "SELECT * FROM mytable"
Dim dbConnectionString As String = "Database=db;Data Source=localhost;User Id=*;Password=*"

Dim dbConnection As New MySqlConnection(dbConnectionString)
Dim dbCommand As New MySqlCommand(QueryString, dbConnection)
Dim dbDataReader As MySqlDataReader

dbConnection.Open()
dbDataReader = dbCommand.ExecuteReader(CommandBehavior.SingleRow)

While dbDataReader.Read
Return dbDataReader.Item(Setting)
End While

dbDataReader.Close()
dbConnection.Close()
dbConnection.Dispose()
dbConnection = Nothing

Does That Make Sense?