I am trying to track down a concurrency problem described here:
I would like to write a couple of tests against JBC core.
Given that I am experiencing this problem with 3.0.3.GA, which repo url should I use:
Depends on where you want your test to be targeted against. I would suggest 3.0.X for your test initially, but I don't expect to do another 3.0.X release (unless something is critical) so it is best to make sure your test also works against trunk (which will become 3.1.0 soon)