Index: mcs/class/corlib/System.IO/ChangeLog
===================================================================
--- mcs/class/corlib/System.IO/ChangeLog	(revision 60118)
+++ mcs/class/corlib/System.IO/ChangeLog	(working copy)
@@ -1,3 +1,8 @@
+2006-05-01  Daniel Drake  <dsd@gentoo.org>
+
+	* Directory.cs: Return false (as documented) on ERROR_ACCESS_DENIED in
+	Exists() rather than throwing an exception. Bug #78239.
+
 2006-04-29  Atsushi Enomoto <atsushi@ximian.com>
 
 	* UnexceptionalStreamReader.cs (Read): Fix for #78218, where we
Index: System.IO/Directory.cs
===================================================================
--- mcs/class/corlib/System.IO/Directory.cs	(revision 60118)
+++ mcs/class/corlib/System.IO/Directory.cs	(working copy)
@@ -173,7 +173,8 @@
 			
 			exists = MonoIO.ExistsDirectory (path, out error);
 			if (error != MonoIOError.ERROR_SUCCESS &&
-			    error != MonoIOError.ERROR_PATH_NOT_FOUND) {
+			    error != MonoIOError.ERROR_PATH_NOT_FOUND &&
+			    error != MonoIOError.ERROR_ACCESS_DENIED) {
 				throw MonoIO.GetException (path, error);
 			}