[Pljava-dev] problem deploying pljava

Hi all,
this is the system that I'm using:

Linux fluca-laptop 2.6.31-19-generic #56-Ubuntu SMP Thu Jan 28 02:39:34 UTC
2010 x86_64 GNU/Linux

select version();
version
-------------------------------------------------------------------------------------------------------------
PostgreSQL 8.4.3 on x86_64-pc-linux-gnu, compiled by GCC gcc-4.4.real (Ubuntu
4.4.1-4ubuntu9) 4.4.1, 64-bit
(1 row)

I've downloaded the pljava1.4 64 bit version, I've uncompressed and checked
that the pljava.so library is ready to work:

$ ldd pljava.so
linux-vdso.so.1 => (0x00007fff180bf000)
libjvm.so => /usr/lib/jvm/java-6-
sun-1.6.0.20/jre/lib/amd64/server/libjvm.so (0x00007f0b46a34000)
libc.so.6 => /lib/libc.so.6 (0x00007f0b466c5000)
libm.so.6 => /lib/libm.so.6 (0x00007f0b46440000)
libdl.so.2 => /lib/libdl.so.2 (0x00007f0b4623c000)
libpthread.so.0 => /lib/libpthread.so.0 (0x00007f0b46020000)
/lib64/ld-linux-x86-64.so.2 (0x00007f0b47707000)

Since I'm using the java vm provided by my Ubuntu distro, I've placed the
following lines in the ld.conf.so:

/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/server/
/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/native_threads/

and restarted the postmaster.
Now I believe I've configured everything, but when I try to run the deploy
program I get an PSQLException that pljava.so cannot be loaded:

org.postgresql.util.PSQLException: ERROR: could not load library
"/sviluppo/java/pljava/pljava.so": /sviluppo/java/pljava/pljava.so: undefined
symbol: global_timezone
at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1592)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1327)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:192)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:451)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:336)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:328)
at
org.postgresql.pljava.deploy.Deployer.initJavaHandlers(Deployer.java:474)
at org.postgresql.pljava.deploy.Deployer.main(Deployer.java:269)

and in the server logs I found the following that is the same error:

ERROR: could not load library "/sviluppo/java/pljava/pljava.so":
/sviluppo/java/pljava/pljava.so: undefined symbol: global_timezone

Any idea about how to configure pljava on the system?

Thanks,
Luca