Severe performance degradation when using the 9.2-1000 JDBC 4 driver

Hi,

after the upgrade the latest PortgreSQL 9.2-1000 JDBC 4 driver, we
discovered a severe performance degradation when connecting to 8.4,
9.0, 9.1, and 9.2 servers.  In a test application the
DriverManager#getConnection(String, String, String) call constantly
took > 4500 ms compared to < 20 ms with the previous 9.1-903 JDBC 4
driver. This makes the driver virtually unusable in production
environments.

Client: Windows 2008 R2, Windows 7
Server: PostgreSQL 8.4, 9.0, 9.1, 9.2 on Linux 2.6

Regards,
Alex