Hello, When writing a python module for unbound my module appeared to be leaking memory. It uses unbound 1.4.9 and swig 1.3.40. I've isolated the problem to one line that accesses "qstate.return_msg.rep.rrsets[i].rk.type_str". As a test I modified the dict.py example file to contain the offending line and also added the range 2000 loop to exacerbate the problem, causing a few megabytes of ram to be consumed every second or so. Below is the small addition I made to dict.py to illustrate the issue, elif event == MODULE_EVENT_MODDONE: #the iterator has finished if qstate.return_msg and qstate.return_msg.rep: for i in range(0, 2000): for i in range(0,qstate.return_msg.rep.rrset_count): s = qstate.return_msg.rep.rrsets[i].rk.type_str #we don't need modify result qstate.ext_state[id] = MODULE_FINISHED return True I tried setting s to a static string as well as qstate.return_msg.rep and memory usage remained constant with no leak. This is on a server that is getting 20-30qps. Could this be a problem in unbound or swig? Is there something I should do differently? Thanks.