diff --git a/build.py b/build.py
index 73c0742..a058421 100755
--- a/build.py
+++ b/build.py
@@ -16,12 +16,13 @@ from configure import *
 from config.parse_options import *
 
 def main():
-    build_parse_options()
+    options, args = build_parse_options()
 
     #
     # Configure
     #
-    configure_kernel(CML2_CML_FILE)
+    if options.config or not os.path.exists(CML2_OLDCONFIG_FILE):
+        configure_kernel(CML2_CML_FILE)
 
     #
     # Build the kernel
diff --git a/config/parse_options.py b/config/parse_options.py
index 764d2d4..adae0dd 100644
--- a/config/parse_options.py
+++ b/config/parse_options.py
@@ -18,9 +18,11 @@ def build_parse_options():
 
     parser.add_option("-a", "--arch", type = "string", dest = "arch",
                       help = "Use configuration file for architecture")
-    parser.add_option("-c", "--num-containers", type = "int", dest = "ncont",
+    parser.add_option("-n", "--num-containers", type = "int", dest = "ncont",
                       help = "Maximum number of containers that will be "
                              "made available in configuration")
+    parser.add_option("-c", "--configure-first", action = "store_true", dest = "config",
+                      help = "Tells the build script to run configurator first")
     parser.add_option("-f", "--use-file", dest = "cml_file",
                       help = "Supply user-defined cml file "
                              "(Use only if you want to override default)")
@@ -56,4 +58,4 @@ def build_parse_options():
             else:
                 print "Deleting %s" % CML2_OLDCONFIG_FILE
                 os.remove(CML2_OLDCONFIG_FILE)
-
+    return options, args
diff --git a/conts/posix/test0/src/fileio.c b/conts/posix/test0/src/fileio.c
index b5aabe3..7d9c3c0 100644
--- a/conts/posix/test0/src/fileio.c
+++ b/conts/posix/test0/src/fileio.c
@@ -23,7 +23,8 @@ int fileio(void)
 	memset(filename, 0, 128);
 	sprintf(filename, "/home/bahadir/newfile%d.txt", tid);
 	if ((fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, S_IRWXU)) < 0) {
-		test_printf("OPEN: %d", errno);
+		test_printf("OPEN: %d", -errno);
+		test_printf("While trying to open %s\n", filename);
 		goto out_err;
 	}
 	test_printf("%d: Created %s\n", tid, filename);
diff --git a/conts/posix/test0/src/forktest.c b/conts/posix/test0/src/forktest.c
index 204b83e..9780685 100644
--- a/conts/posix/test0/src/forktest.c
+++ b/conts/posix/test0/src/forktest.c
@@ -17,7 +17,7 @@ int forktest(void)
 
 
 	/* 16 forks */
-	for (int i = 0; i < 4; i++) {
+	for (int i = 0; i < 1; i++) {
 		test_printf("%d: Forking...\n", getpid());
 		if (fork() < 0)
 			goto out_err;
diff --git a/scripts/conts/containers.py b/scripts/conts/containers.py
index bc79895..0d36dac 100755
--- a/scripts/conts/containers.py
+++ b/scripts/conts/containers.py
@@ -53,7 +53,7 @@ def build_posix_container(projpaths, container):
     print POSIXDIR
     print '\nBuilding the Posix Container...'
     scons_cmd = 'scons ' + 'cont=' + str(container.id)
-    print "Issuing scons command: %s" % scons_cmd
+    #print "Issuing scons command: %s" % scons_cmd
     os.system(scons_cmd)
     builddir = source_to_builddir(POSIXDIR, container.id)
     os.path.walk(builddir, glob_by_walk, ['*.elf', images])