+// JMT 2012-09-8 - disabling the groundnet-caching as part of enabling the
+// navcache. The problem isn't the NavCache - it's that for the past few years,
+// we have not being running destructors on FGPositioned classes, and hence,
+// not running this code.
+// When I fix FGPositioned lifetimes (unloading-at-runtime support), this
+// will need to be re-visited so it can run safely during shutdown.
+#if 0