diff -Nurd -x*.[Poa] -x*.orig -xMakefile -x.deps freeciv-cvs-May-14/server/civserver.c freeciv-cvs-May-14+rootcheck/server/civserver.c
--- freeciv-cvs-May-14/server/civserver.c	Tue Apr 27 14:17:56 1999
+++ freeciv-cvs-May-14+rootcheck/server/civserver.c	Mon May 17 11:47:05 1999
@@ -130,6 +130,13 @@
   int save_counter=0;
   int log_level=LOG_NORMAL;
 
+  if (!getuid() || !geteuid()) {
+    fprintf(stderr,
+	"Fatal error: you're trying to run me as superuser!\n", argv[0]);
+    fprintf(stderr,"Use a non-privileged account instead.\n");
+    exit(1);
+  }
+
   strcpy(metaserver_info_line, DEFAULT_META_SERVER_INFO_STRING);
 
   /* no  we don't use GNU's getopt or even the "standard" getopt */