diff --git a/gns3server/modules/attic.py b/gns3server/modules/attic.py
index 9a31653e..cc1bc1a6 100644
--- a/gns3server/modules/attic.py
+++ b/gns3server/modules/attic.py
@@ -67,13 +67,10 @@ def find_unused_port(start_port, end_port, host='127.0.0.1', socket_type="TCP",
             return port
         except OSError as e:
             last_exception = e
-            if e.errno == errno.EADDRINUSE or e.errno == errno.EACCES:  # socket already in use or permission denied
-                if port + 1 == end_port:
-                    break
-                else:
-                    continue
+            if port + 1 == end_port:
+                break
             else:
-                raise Exception("Could not find an unused port between {} and {} on host {}: {}".format(start_port, end_port, host, e))
+                continue
 
     raise Exception("Could not find a free port between {} and {} on host {}, last exception: {}".format(start_port, end_port, host, last_exception))
 
diff --git a/gns3server/modules/dynamips/__init__.py b/gns3server/modules/dynamips/__init__.py
index a69518d2..8041e43c 100644
--- a/gns3server/modules/dynamips/__init__.py
+++ b/gns3server/modules/dynamips/__init__.py
@@ -157,7 +157,10 @@ class Dynamips(IModule):
         # automatically save configs for all router instances
         for router_id in self._routers:
             router = self._routers[router_id]
-            router.save_configs()
+            try:
+                router.save_configs()
+            except DynamipsError:
+                continue
 
         # stop all Dynamips hypervisors
         if self._hypervisor_manager:
@@ -232,7 +235,10 @@ class Dynamips(IModule):
         # automatically save configs for all router instances
         for router_id in self._routers:
             router = self._routers[router_id]
-            router.save_configs()
+            try:
+                router.save_configs()
+            except DynamipsError:
+                continue
 
         # stop all Dynamips hypervisors
         if self._hypervisor_manager:
diff --git a/gns3server/modules/qemu/qemu_vm.py b/gns3server/modules/qemu/qemu_vm.py
index 6cb2efa1..b9e8ee24 100644
--- a/gns3server/modules/qemu/qemu_vm.py
+++ b/gns3server/modules/qemu/qemu_vm.py
@@ -715,7 +715,7 @@ class QemuVM(object):
                 # create a "FLASH" with 256MB if no disk image has been specified
                 hda_disk = os.path.join(self._working_dir, "flash.qcow2")
                 if not os.path.exists(hda_disk):
-                    retcode = subprocess.call([qemu_img_path, "create", "-f", "qcow2", hda_disk, "256M"])
+                    retcode = subprocess.call([qemu_img_path, "create", "-f", "qcow2", hda_disk, "128M"])
                     log.info("{} returned with {}".format(qemu_img_path, retcode))
 
         except OSError as e: