diff -r 18e505e3f370 -r 529f3bf5c2f1 filemanager/Engine/src/CFileManagerItemProperties.cpp
--- a/filemanager/Engine/src/CFileManagerItemProperties.cpp	Wed Jun 09 09:28:11 2010 +0300
+++ b/filemanager/Engine/src/CFileManagerItemProperties.cpp	Mon Jun 21 15:26:15 2010 +0300
@@ -379,6 +379,10 @@
     iActiveSize = NULL;
     iActiveSize = CFileManagerActiveSize::NewL( iEngine.Fs(), aFullPath );
     iEngine.ShowWaitDialogL( *iActiveSize );
+    if ( !iActiveSize->IsProcessDone() )
+        {
+        User::Leave( KErrCancel );
+        }
     return iActiveSize->GetFolderSize();
     }