JDBC Driver Munging My Text?

We are seeing some strange behavior in our system that uses Postgres 7.1.3
and JDBC. System: Red Hat Linux 7.1/Intel.

Basically what we are seeing is that text stored in a VARCHAR is entered
like this: "hello, how are you" is stored like this: "hello ,how are you".
Notice the space and comma being transposed...

The plot thickens...

This is on a new server. The old server, also running 7.1.3, though built
quite a long time ago, does not exhibit this behavior.

Any ideas? Known bug? Strange config? It is possible that I built the JDBC
driver on the old machine and just copied it to the new machine... I can't
remember but it shouldn't matter, should it?

Thanks,
Hunter