I'm the lead author of ORMLite, a smallish ORM project that supports Derby and some other JDBC and Android databases. I'm getting a reproducible memory fault during one of my Derby tests. I've just ignored the test for now in my code but I thought I'd report it.
To check out the tree svn co http://ormlite.svn.sourceforge.net/svnroot/ormlite/ormliteTest/trunk
You'll need maven. The DerbyEmbeddedBaseDaoImplTest is the one that fails. Not by itself unfortunately but running the com.j256.ormlite.dao package which is also testing some other database types causes it to fail every time for me. It's the testCloseInIterator() method defined in the test base class JdbcBaseDaoImplTest. This test closes the underlying database connection in the middle of an iterator loop to test exception handling.
Sorry if this is just too obscure to be useful.