Why does the Connector/J driver write lots of records to stderr?

[mysql]

My stderr.log is filling up with statements such as:

Wed Sep 07 07:08:09 BST 2005 TRACE: --> Connection.java:3256 com.mysql.jdbc.Connection.initializeDriverProperties({HOST=localhost:3306, autoReconnect=true, user=username, password=pass, DBNAME=db})
Wed Sep 07 07:08:09 BST 2005 TRACE: --> ConnectionProperties.java:1979 com.mysql.jdbc.ConnectionProperties.initializeProperties({HOST=localhost:3306, autoReconnect=true, user=username, password=pass, DBNAME=db})
Wed Sep 07 07:08:09 BST 2005 TRACE: --> ConnectionProperties.java:2255 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.initializeFrom({autoReconnect=true})
Wed Sep 07 07:08:09 BST 2005 TRACE: --> ConnectionProperties.java:2278 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.getPropertyName()
Wed Sep 07 07:08:09 BST 2005 TRACE: <-- ConnectionProperties.java:2278 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.getPropertyName(..) returning "alwaysSendSetIsolation"
Wed Sep 07 07:08:09 BST 2005 TRACE: --> ConnectionProperties.java:2278 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.getPropertyName()
Wed Sep 07 07:08:09 BST 2005 TRACE: <-- ConnectionProperties.java:2278 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.getPropertyName(..) returning "alwaysSendSetIsolation"
Wed Sep 07 07:08:09 BST 2005 TRACE: --> ConnectionProperties.java:2440 com.mysql.jdbc.ConnectionProperties$BooleanConnectionProperty.initializeFrom(null)
Wed Sep 07 07:08:09 BST 2005 TRACE: <-- ConnectionProperties.java:2440 com.mysql.jdbc.ConnectionProperties$BooleanConnectionProperty.initializeFrom(..) returning null
Wed Sep 07 07:08:09 BST 2005 TRACE: <-- ConnectionProperties.java:2255 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.initializeFrom(..) returning null
Wed Sep 07 07:08:09 BST 2005 TRACE: --> ConnectionProperties.java:2255 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.initializeFrom({autoReconnect=true})
Wed Sep 07 07:08:09 BST 2005 TRACE: --> ConnectionProperties.java:2278 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.getPropertyName()
Wed Sep 07 07:08:09 BST 2005 TRACE: <-- ConnectionProperties.java:2278 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.getPropertyName(..) returning "allowLoadLocalInfile"
Wed Sep 07 07:08:09 BST 2005 TRACE: --> ConnectionProperties.java:2278 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.getPropertyName()
Wed Sep 07 07:08:09 BST 2005 TRACE: <-- ConnectionProperties.java:2278 com.mysql.jdbc.ConnectionProperties$ConnectionProperty.getPropertyName(..) returning "allowLoadLocalInfile"


And I have no idea why? Everything seems to be working fine but my stderr.log is growing out of control!