mysql jdbc windows vista

[eman85 eman85]

My MySQL 5.0 installation had always worked fine with Java. I used it from my programs accessing databases with JDBC.

Suddenly it gave up working: when I try connecting it produces exceptions.
I try even with the latest MySQL 5.1 and with the most recent JDBC driver, but all has been useless.
I really don't know what to do, all my projects are completely unusable.

Did someone experienced the same problem?

I add the exception stack:

com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception:

** BEGIN NESTED EXCEPTION **

java.net.SocketException
MESSAGE: java.net.ConnectException: Connection refused: connect

STACKTRACE:

java.net.SocketException: java.net.ConnectException: Connection refused: connect
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:156)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:276)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2666)
at com.mysql.jdbc.Connection.<init>(Connection.java:1531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at ProvaMySql.main(ProvaMySql.java:15)


** END NESTED EXCEPTION **



Last packet sent to the server was 10 ms ago.
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2741)
at com.mysql.jdbc.Connection.<init>(Connection.java:1531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at ProvaMySql.main(ProvaMySql.java:15)


I hope someone can help me.