> Well, if an old Hibernate version is used, chances are high they also
> use an old Jaybird driver.
>
> Grant, could you - next to the testcase Roman requested - specify the
> exact software versions you use (of Java, Hibernate and Jaybird)?

As Grant said, issue happened when you migrated from Jaybird 1.5.x to
latest stable (2.1.6). You could try HEAD (you would need to build it
yourself, but that should be easy), there are few open tickets, but the
main showstoper for 2.2.0 is lack of time to prepare the JNI stuff for
64-bit platforms, so I think the HEAD is quite stable. If it works, then
we could identify the issue more easy.

And, as I said, the test case would be very helpful - then I could check
different versions of Hibernate and Jaybird. But I suspect that would be
not that easy to reproduce.

One tip - some time ago we had issues with multithreaded access to the
same object (in fact that was 1.5.x branch, there were many fixes in
2.x). The issues should be fixed now, but that could one more
not-yet-identified bugs of that kind.

Roman