diff --git a/src/.cvsignore b/src/.cvsignore
index a511de0b..5cae640d 100644
--- a/src/.cvsignore
+++ b/src/.cvsignore
@@ -1,4 +1,6 @@
 *.0??
+*.idb
+*.pdb
 *.upx
 .gdbinit
 upx
diff --git a/src/Makefile b/src/Makefile
index 27b1f55a..c887003d 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -16,7 +16,7 @@ ifeq ($(strip $(UCLDIR)),)
 UCLDIR = $(HOME)/local/src/ucl-0.91
 endif
 
-DEBUG = 1
+DEBUG = 0
 
 
 # -------------------------------------------------------
@@ -242,7 +242,7 @@ o = .obj
 a = .lib
 CC = cl -nologo
 CFLAGS = -W4
-CXXFLAGS1 = $(CFLAGS) -GX -GR
+CXXFLAGS1 = $(CFLAGS) -GR -GX -EHa
 CXXFLAGS2 = $(CFLAGS)
 LDFLAGS =
 LINK_LDFLAGS = /link /map:$(basename $@).map
@@ -253,7 +253,7 @@ endif
 export LIB
 
 ifeq (1,2)
-  # statically link libc
+  # statically link libc.lib
   CC += -ML
   ##LDLIBS = $(u)_s.lib zlib_s.lib setargv.obj
   LDLIBS = $(u)_s.lib setargv.obj
@@ -267,7 +267,7 @@ ifeq ($(DEBUG),1)
   CFLAGS += -Od -ZI
   LINK_LDFLAGS += /debug
 else
-  CFLAGS += -O2 -Gs -GF
+  CFLAGS += -O2 -GF
   LINK_LDFLAGS += /release
 endif
 
@@ -321,7 +321,8 @@ CXXFLAGS1 = $(CFLAGS)
 CXXFLAGS2 = $(CFLAGS)
 CFLAGS_OUTPUT = -o$@
 LDFLAGS =
-LDLIBS = $(u).lib zlib.lib
+##LDLIBS = $(u).lib zlib.lib
+LDLIBS = $(u).lib
 
 ifneq ($(strip $(wildcard $(UDIR))),)
 LIB := $(UDIR);$(LIB)
@@ -389,6 +390,7 @@ mostlyclean:
 
 clean: mostlyclean
 	-rm -f *.a *.lib *.o *.obj tags TAGS ID
+	-rm -f *.idb *.pdb
 	-rm -f upx upx.exe upx_nrv upx_nrv.exe upx_ucl upx_ucl.exe
 
 distclean: clean
diff --git a/src/lefile.h b/src/lefile.h
index 82e0954d..28f651a3 100644
--- a/src/lefile.h
+++ b/src/lefile.h
@@ -211,6 +211,11 @@ protected:
     unsigned sononres_names;
     unsigned soimage;
     unsigned soentries;
+
+private:
+    // disable copy and assignment
+    LeFile(LeFile const &); // {}
+    LeFile& operator= (LeFile const &); // { return *this; }
 };
 
 
diff --git a/src/mem.cpp b/src/mem.cpp
index a7434430..b7fc6363 100644
--- a/src/mem.cpp
+++ b/src/mem.cpp
@@ -33,7 +33,7 @@
 //
 **************************************************************************/
 
-MemBuffer::MemBuffer(unsigned size=0) :
+MemBuffer::MemBuffer(unsigned size) :
     ptr(NULL), alloc_ptr(NULL), alloc_size(0)
 {
     if (size > 0)
diff --git a/src/p_lx_elf.cpp b/src/p_lx_elf.cpp
index 39e840d0..cc1343ae 100644
--- a/src/p_lx_elf.cpp
+++ b/src/p_lx_elf.cpp
@@ -446,7 +446,7 @@ void PackLinuxI386elf::unpack(OutputFile *fo)
     off_t ptload0hi=0, ptload1lo=0;
 
     // decompress PT_LOAD
-    fi->seek(-(2*4 + ph.c_len), SEEK_CUR);
+    fi->seek(- (off_t) (2*4 + ph.c_len), SEEK_CUR);
     for (unsigned j=0; j < ehdr->e_phnum; ++phdr, ++j) {
         if (PT_LOAD==phdr->p_type) {
             if (0==ptload0hi) {
diff --git a/src/p_unix.cpp b/src/p_unix.cpp
index eac09cd8..697910ed 100644
--- a/src/p_unix.cpp
+++ b/src/p_unix.cpp
@@ -471,7 +471,7 @@ void PackLinuxI386::patchLoaderChecksum()
     // checksum for loader + p_info
     lp->l_checksum = 0;  // (this checksum is currently unused)
     lp->l_magic = UPX_ELF_MAGIC;
-    lp->l_lsize = lsize;
+    lp->l_lsize = (unsigned short) lsize;
     lp->l_version = (unsigned char) ph.version;
     lp->l_format  = (unsigned char) ph.format;
     unsigned adler = upx_adler32(0,NULL,0);
diff --git a/src/p_wcle.cpp b/src/p_wcle.cpp
index be6c6ab7..0eb9a955 100644
--- a/src/p_wcle.cpp
+++ b/src/p_wcle.cpp
@@ -434,7 +434,7 @@ void PackWcle::pack(OutputFile *fo)
     const unsigned calltrickoffset = ft.cto << 24;
 
     // attach some useful data at the end of preprocessed fixups
-    ifixups[sofixups++] = ih.automatic_data_object;
+    ifixups[sofixups++] = (unsigned char) ih.automatic_data_object;
     unsigned ic = objects*sizeof(*iobject_table);
     memcpy(ifixups+sofixups,iobject_desc,ic);
     iobject_desc.free();
diff --git a/src/packer.h b/src/packer.h
index 0e970e4c..62c2116e 100644
--- a/src/packer.h
+++ b/src/packer.h
@@ -243,6 +243,11 @@ private:
     // private to checkPatch()
     void *last_patch;
     long last_patch_offset;
+
+private:
+    // disable copy and assignment
+    Packer(Packer const &); // {}
+    Packer& operator= (Packer const &); // { return *this; }
 };
 
 
diff --git a/src/tailor.h b/src/tailor.h
index 9fb2500c..73bfef01 100644
--- a/src/tailor.h
+++ b/src/tailor.h
@@ -154,6 +154,7 @@
 #    define vsnprintf _vsnprintf
 //#    pragma warning(once: 4097 4710)
 #    pragma warning(disable: 4097 4710)
+#    pragma warning(disable: 4511 4512)
 #  endif
 #elif defined(__WATCOMC__)
 #  define __UPX_CDECL       __cdecl