diff --git a/README.md b/README.md
index c1d3fba..9f3337a 100644
--- a/README.md
+++ b/README.md
@@ -163,6 +163,9 @@ Build packages are stored in a cache `/var/cache/decman`. By default decman keep
 
 ### Systemd units
 
+> [!NOTE]
+> Decman will only enable and disable systemd systemd. It will not start or stop them.
+
 Decman can enable systemd services, system wide or for a specific user. Decman will enable all units defined in the source, and disable them when they are removed from the source. If a unit is not defined in the source, decman will not touch it.
 
 ### Files
diff --git a/src/decman/app.py b/src/decman/app.py
index c167441..5486122 100644
--- a/src/decman/app.py
+++ b/src/decman/app.py
@@ -218,6 +218,9 @@ def run(self):
     def _disable_units(self):
         to_disable = self.source.units_to_disable(self.store)
         l.print_list("Disabling systemd units:", to_disable)
+        if to_disable:
+            l.print_info(
+                "Disabled systemd units won't be stopped automatically.")
         if not self.only_print:
             self.systemctl.disable_units(to_disable)
 
@@ -286,6 +289,9 @@ def _create_and_remove_files(self):
     def _enable_units(self):
         to_enable = self.source.units_to_enable(self.store)
         l.print_list("Enabling systemd units:", to_enable)
+        if to_enable:
+            l.print_info(
+                "Enabled systemd units won't be started automatically.")
         if not self.only_print:
             self.systemctl.enable_units(to_enable)
 
diff --git a/src/decman/lib/__init__.py b/src/decman/lib/__init__.py
index 9fd0574..8e2e521 100644
--- a/src/decman/lib/__init__.py
+++ b/src/decman/lib/__init__.py
@@ -680,11 +680,13 @@ def _all_units(self) -> set[str]:
         return result
 
     def _all_user_units(self) -> dict[str, set[str]]:
-        result = {}
-        result.update(self.systemd_user_units)
-        for module in self.modules:
-            if module.enabled:
-                result.update(module.systemd_user_units())
+        result = self.systemd_user_units
+        for module in [m for m in self.modules if m.enabled]:
+            module_user_units: dict[str, list[str]] = module.systemd_user_units()
+            for user in module_user_units.keys():
+                if user not in result:
+                    result[user] = set()
+                result[user].update(module_user_units[user])
         return result
 
 
@@ -922,11 +924,11 @@ def __init__(self, stream):
 
     def run(self):
         while not self.done and not self._stream.closed:
-            output = self._stream.read()
+            output = self._stream.read(1000)
             if output:
                 output = output.decode()
                 self.output += output
-                print(output, end="")
+                print(output, end="", flush=True)
             time.sleep(0.1)
 
 
diff --git a/tests/test_source_resolution.py b/tests/test_source_resolution.py
index 4084d93..c4c887c 100644
--- a/tests/test_source_resolution.py
+++ b/tests/test_source_resolution.py
@@ -264,3 +264,49 @@ def test_packages_to_remove(self):
             self.source.packages_to_remove(self.currently_installed_packages),
             ["p4", "A4", "M_A1", "M_A2"],
         )
+
+class TestModuleUserServices(unittest.TestCase):
+
+    class ModuleWithUserServiceOne(Module):
+
+        def __init__(self):
+            super().__init__("one", True, "0")
+
+        def systemd_user_units(self) -> dict[str, list[str]]:
+            return {
+                    "user": ['foo.service']
+                    }
+
+    class ModuleWithUserServiceTwo(Module):
+
+        def __init__(self):
+            super().__init__("two", True, "0")
+
+        def systemd_user_units(self) -> dict[str, list[str]]:
+            return {
+                    "user": ['bar.service']
+                    }
+
+    def setUp(self) -> None:
+        self.source = Source(
+                pacman_packages=set(),
+                aur_packages=set(),
+                user_packages=set(),
+                ignored_packages=set(),
+                systemd_units=set(),
+                systemd_user_units={},
+                files={},
+                directories={},
+                modules={                
+                         self.ModuleWithUserServiceOne(),
+                         self.ModuleWithUserServiceTwo()
+                         },
+            )
+        self.store = Store()
+
+
+    def test_user_units_to_enable(self):
+        self.assertDictEqual(
+            self.source.user_units_to_enable(self.store),
+            {"user": ["foo.service", "bar.service"]},
+        )