Multiple prepared insert statements fail

[Marcel Wijnands]

When I try to do multiple prepared insert statements, only the first one succeeds.

vb.net snippet:
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Dim cmd As New MySqlCommand("DROP TABLE IF EXISTS Test", conn)
cmd.ExecuteNonQuery()
cmd.CommandText = "CREATE TABLE Test (fl FLOAT, db DOUBLE, dec1 DECIMAL(5,2))"
cmd.ExecuteNonQuery()

cmd = New MySqlCommand("INSERT INTO Test VALUES (?fl, ?db, ?dec)", conn)
cmd.Parameters.Add("?fl", MySqlDbType.Float)
cmd.Parameters.Add("?db", MySqlDbType.Double)
cmd.Parameters.Add("?dec", MySqlDbType.Decimal)
cmd.Parameters(0).Value = 2.3
cmd.Parameters(1).Value = 4.6
cmd.Parameters(2).Value = 23.82

cmd.Prepare()
cmd.ExecuteScalar()

cmd.Parameters(0).Value = 3.3
cmd.Parameters(1).Value = 2.6
cmd.Parameters(2).Value = 21.82

cmd.ExecuteScalar()
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Results:
If the cmd.prepare statement is commented out, the table contains the expected 2 rows.
If the cmd.prepare statement stays as the snippet shows, the table contains only 1 row.

Is this a bug?

cheers,
Marcel