diff --git a/main.cpp b/main.cpp
index 9c9e8662d..ddc359af8 100644
--- a/main.cpp
+++ b/main.cpp
@@ -806,9 +806,9 @@ int64 CBlock::GetBlockValue(int64 nFees) const
 
 unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast)
 {
-    const unsigned int nTargetTimespan = 14 * 24 * 60 * 60; // two weeks
-    const unsigned int nTargetSpacing = 10 * 60;
-    const unsigned int nInterval = nTargetTimespan / nTargetSpacing;
+    const int64 nTargetTimespan = 14 * 24 * 60 * 60; // two weeks
+    const int64 nTargetSpacing = 10 * 60;
+    const int64 nInterval = nTargetTimespan / nTargetSpacing;
 
     // Genesis block
     if (pindexLast == NULL)
@@ -825,8 +825,8 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast)
     assert(pindexFirst);
 
     // Limit adjustment step
-    unsigned int nActualTimespan = pindexLast->nTime - pindexFirst->nTime;
-    printf("  nActualTimespan = %d  before bounds\n", nActualTimespan);
+    int64 nActualTimespan = (int64)pindexLast->nTime - (int64)pindexFirst->nTime;
+    printf("  nActualTimespan = %"PRI64d"  before bounds\n", nActualTimespan);
     if (nActualTimespan < nTargetTimespan/4)
         nActualTimespan = nTargetTimespan/4;
     if (nActualTimespan > nTargetTimespan*4)
@@ -843,7 +843,7 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast)
 
     /// debug print
     printf("GetNextWorkRequired RETARGET\n");
-    printf("nTargetTimespan = %d    nActualTimespan = %d\n", nTargetTimespan, nActualTimespan);
+    printf("nTargetTimespan = %"PRI64d"    nActualTimespan = %"PRI64d"\n", nTargetTimespan, nActualTimespan);
     printf("Before: %08x  %s\n", pindexLast->nBits, CBigNum().SetCompact(pindexLast->nBits).getuint256().ToString().c_str());
     printf("After:  %08x  %s\n", bnNew.GetCompact(), bnNew.getuint256().ToString().c_str());
 
diff --git a/makefile.mingw b/makefile.mingw
index eee465ca2..9596ece97 100644
--- a/makefile.mingw
+++ b/makefile.mingw
@@ -54,7 +54,7 @@ obj/%.o: %.cpp $(HEADERS)
 	g++ -c $(CFLAGS) -DGUI -o $@ $<
 
 cryptopp/obj/%.o: cryptopp/%.cpp
-	g++ -c $(CFLAGS) -O3 -DCRYPTOPP_X86_ASM_AVAILABLE -o $@ $<
+	g++ -c $(CFLAGS) -O3 -DCRYPTOPP_X86_ASM_AVAILABLE -DCRYPTOPP_DISABLE_SSE2 -o $@ $<
 
 obj/ui_res.o: ui.rc  rc/bitcoin.ico rc/check.ico rc/send16.bmp rc/send16mask.bmp rc/send16masknoshadow.bmp rc/send20.bmp rc/send20mask.bmp rc/addressbook16.bmp rc/addressbook16mask.bmp rc/addressbook20.bmp rc/addressbook20mask.bmp
 	windres $(DEFS) $(INCLUDEPATHS) -o $@ -i $<
diff --git a/makefile.unix b/makefile.unix
index 939418657..e393ff920 100644
--- a/makefile.unix
+++ b/makefile.unix
@@ -3,21 +3,12 @@
 # file license.txt or http://www.opensource.org/licenses/mit-license.php.
 
 
-INCLUDEPATHS= \
- -I"/usr/include" \
- -I"/usr/local/include/wx-2.9" \
- -I"/usr/local/lib/wx/include/gtk2-unicode-debug-static-2.9"
+WXLIBS=$(shell wx-config --debug=yes --libs --static)
+WXFLAGS=$(shell wx-config --debug=yes --cppflags)
 
 LIBPATHS= \
- -L"/usr/lib" \
  -L"/usr/local/lib"
 
-WXLIBS= \
- -Wl,-Bstatic \
-   -l wx_gtk2ud-2.9 \
- -Wl,-Bdynamic \
-   -l gtk-x11-2.0 -l SM
-
 LIBS= \
  -Wl,-Bstatic \
    -l boost_system \
@@ -31,7 +22,7 @@ LIBS= \
 
 DEFS=-D__WXGTK__ -DNOPCH
 DEBUGFLAGS=-g -D__WXDEBUG__
-CFLAGS=-O2 -Wno-invalid-offsetof -Wformat $(DEBUGFLAGS) $(DEFS) $(INCLUDEPATHS)
+CFLAGS=-O2 -Wno-invalid-offsetof -Wformat $(DEBUGFLAGS) $(DEFS)
 HEADERS=headers.h strlcpy.h serialize.h uint256.h util.h key.h bignum.h base58.h \
     script.h db.h net.h irc.h main.h rpc.h uibase.h ui.h noui.h init.h
 
@@ -52,13 +43,13 @@ all: bitcoin
 
 
 headers.h.gch: headers.h $(HEADERS)
-	g++ -c $(CFLAGS) -DGUI -o $@ $<
+	g++ -c $(CFLAGS) $(WXFLAGS) -DGUI -o $@ $<
 
 obj/%.o: %.cpp $(HEADERS) headers.h.gch
-	g++ -c $(CFLAGS) -DGUI -o $@ $<
+	g++ -c $(CFLAGS) $(WXFLAGS) -DGUI -o $@ $<
 
 cryptopp/obj/%.o: cryptopp/%.cpp
-	g++ -c $(CFLAGS) -O3 -o $@ $<
+	g++ -c $(CFLAGS) -O3 -DCRYPTOPP_DISABLE_SSE2 -o $@ $<
 
 bitcoin: $(OBJS) obj/ui.o obj/uibase.o
 	g++ $(CFLAGS) -o $@ $(LIBPATHS) $^ $(WXLIBS) $(LIBS)
diff --git a/ui.cpp b/ui.cpp
index e457d10ee..71455e672 100644
--- a/ui.cpp
+++ b/ui.cpp
@@ -1763,8 +1763,7 @@ void COptionsDialog::OnButtonApply(wxCommandEvent& event)
 
 CAboutDialog::CAboutDialog(wxWindow* parent) : CAboutDialogBase(parent)
 {
-    m_staticTextVersion->SetLabel(strprintf(_("version %d.%d.%d beta"), VERSION/10000, (VERSION/100)%100, VERSION%100));
-    //m_staticTextVersion->SetLabel(strprintf(_("version %d.%d.%d%s beta"), VERSION/10000, (VERSION/100)%100, VERSION%100, pszSubVer));
+    m_staticTextVersion->SetLabel(strprintf(_("version %d.%d.%d%s beta"), VERSION/10000, (VERSION/100)%100, VERSION%100, pszSubVer));
 
     // Change (c) into UTF-8 or ANSI copyright symbol
     wxString str = m_staticTextMain->GetLabel();