diff -r c1f20ce4abcf -r 3e88ff8f41d5 userlibandfileserver/fileserver/sfile/sf_main.cpp
--- a/userlibandfileserver/fileserver/sfile/sf_main.cpp	Tue Aug 31 16:34:26 2010 +0300
+++ b/userlibandfileserver/fileserver/sfile/sf_main.cpp	Wed Sep 01 12:34:56 2010 +0100
@@ -26,6 +26,9 @@
 #endif
 #include "d32btrace.h"
 
+// define this macro to enable tracing very early on in the boot sequence
+//#define __ENABLE_TRACE__
+
 #ifdef __EPOC32__
 _LIT(KStartupExeSysBinName,"Z:\\Sys\\Bin\\ESTART.EXE");
 #else
@@ -283,6 +286,35 @@
 	User::SetCritical(User::ESystemCritical);
 
 	TInt r;
+#ifdef SYMBIAN_FTRACE_ENABLE
+	r = User::LoadLogicalDevice(_L("D_FTRACE"));	
+	__PRINT1(_L("User::LoadLogicalDevice(D_FTRACE) returns %d"),r);
+	__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists,Fault(ETraceLddLoadFailure));
+
+	r = TheFtrace.Open(EOwnerProcess);
+	__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists,Fault(ETraceLddLoadFailure));
+#endif
+
+#if defined (__ENABLE_TRACE__)
+		{
+		RBTrace trace;
+		
+		trace.Open();
+		
+//		trace.SetMode(RBTrace::EEnable + RBTrace::EFreeRunning);
+		trace.SetFilter(BTrace::EThreadIdentification,1);
+
+		trace.SetFilter(UTF::EBorder,1);
+		trace.SetFilter(UTF::EError,1);
+
+		trace.SetFilter2(EF32TraceUidEfsrv,1);
+//		trace.SetFilter2(EF32TraceUidFileSys,1);
+//		trace.SetFilter2(EF32TraceUidProxyDrive,1);
+
+		trace.Close();	
+		}
+
+#endif
 
 //
 // Load the file system's device driver