Major [Steve Luebbe]
Based on the code in the org.jgroups.protocols.Locking it tries to calculate an index based on the lock name (code in next 2 lines):
protected Lock _getLock(String lock_name) { int index=lock_name != null? lock_name.hashCode() % locks.length : 0; return locks[index]; }
When debugging I can see that:
lock_name = dpa_project
lock_name.hashCode() = -1316662737
locks.length = 10
SOLUTION: use Math.abs() on the hash code
