=== modified file 'softwarecenter/ui/gtk3/views/appdetailsview.py'
--- old/softwarecenter/ui/gtk3/views/appdetailsview.py	2012-12-17 09:53:32 +0000
+++ new/softwarecenter/ui/gtk3/views/appdetailsview.py	2013-10-08 15:13:59 +0000
@@ -35,7 +35,10 @@ from softwarecenter.cmdfinder import Cmd
 from softwarecenter.netstatus import (NetState, get_network_watcher,
                                       network_state_is_connected)
 from softwarecenter.db.application import Application
-from softwarecenter.db import DebFileApplication
+from softwarecenter.db.debfile import (
+    DebFileApplication,
+    AppDetailsDebFile,
+    )
 from softwarecenter.backend.reviews import ReviewStats
 from softwarecenter.enums import (AppActions,
                                   PkgStates,
@@ -452,7 +455,14 @@ class PackageStatusBar(StatusBar):
                           AppActions.APPLY)):
             self.set_label(self.app_details.warning)
 
-        sensitive = network_state_is_connected()
+        connected = network_state_is_connected()
+        self.set_network_is_connected(connected)
+
+    def set_network_is_connected(self, have_network):
+        sensitive = have_network
+        # debs can always be installed(?)
+        if isinstance(self.app_details, AppDetailsDebFile):
+            sensitive = True
         self.button.set_sensitive(sensitive)
 
     def _convert_purchase_date_str_to_datetime(self, purchase_date):
@@ -911,7 +921,7 @@ class AppDetailsView(Viewport):
 
         # set addon table and action button states based on sensitivity
         sensitive = state in NetState.NM_STATE_CONNECTED_LIST
-        self.pkg_statusbar.button.set_sensitive(sensitive)
+        self.pkg_statusbar.set_network_is_connected(sensitive)
         self.addon_view.addons_set_sensitive(sensitive)
         self.addons_statusbar.button_apply.set_sensitive(sensitive)
         self.addons_statusbar.button_cancel.set_sensitive(sensitive)