JDBC Driver can't read UUID from database

I'm using Hibernate (3.6 and 4.0) with Postgresql 9.1. Our tables have UUIDs in them and your driver is trying to convert UUIDs to longs:

Caused by: org.postgresql.util.PSQLException: Bad value for type long : dbada1e4-a165-4601-b34e-d08428cd81df

at org.postgresql.jdbc2.AbstractJdbc2ResultSet.toLong(AbstractJdbc2ResultSet.java:2796)

at org.postgresql.jdbc2.AbstractJdbc2ResultSet.getLong(AbstractJdbc2ResultSet.java:2019)

at org.postgresql.jdbc4.Jdbc4ResultSet.getBlob(Jdbc4ResultSet.java:52)

at org.postgresql.jdbc2.AbstractJdbc2ResultSet.getBlob(AbstractJdbc2ResultSet.java:335)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.hibernate.engine.jdbc.internal.proxy.AbstractResultSetProxyHandler.continueInvocation(AbstractResultSetProxyHandler.java:104)

... 32 more

I've tried chaining the Hibernate annotations to treat them as Strings and CLOBs but I get the same exception.

Driver versions I've tried are 9.0-801.jdbc4 and 9.1-901.jdbc4

This is a show stopper.