Since I'm using Java 6, I normally download the JDBC4 PG driver. Last night I upgraded to JBoss AS 6, and when I used the JDBC 4 driver it crashed with an exception stating something like Connection#createBlob wasn't implemented. Apparently the internal Hibernate tries to call this method.
The download page[1] still lists JDBC 4 support as "limited" saying that "the several of the new methods are stubbed out". This is a step up from last year when it said "the majority". But still, it's hard to believe that this is really still the case. How far off is complete JDBC 4 support?
1] http://jdbc.postgresql.org/download.html