diff --git a/CMakeLists.txt b/CMakeLists.txt
index a0bf9e7fc..9aeb1f951 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -183,8 +183,7 @@ ExternalProject_Add(libbz2
 # unordered containers.
 ExternalProject_Add(boost
   PREFIX ${GraphLab_SOURCE_DIR}/deps/boost
-  URL "http://tcpdiag.dl.sourceforge.net/project/boost/boost/1.53.0/boost_1_53_0.tar.gz" 
-  URL_MD5 57a9e2047c0f511c4dfcf00eb5eb2fbb
+  URL "http://pilotfiber.dl.sourceforge.net/project/boost/boost/1.53.0/boost_1_53_0.tar.gz"
   BUILD_IN_SOURCE 1
   CONFIGURE_COMMAND
   ./bootstrap.sh
@@ -238,8 +237,7 @@ if(NOT NO_TCMALLOC)
     PREFIX ${GraphLab_SOURCE_DIR}/deps/tcmalloc
     # Some users can't access domain googlecode.com ,This is a spare URL
     # URL http://sourceforge.jp/projects/sfnet_gperftools.mirror/downloads/gperftools-2.0.tar.gz
-    URL http://gperftools.googlecode.com/files/gperftools-2.0.tar.gz
-    URL_MD5 13f6e8961bc6a26749783137995786b6
+	URL "https://github.com/gperftools/gperftools/archive/gperftools-2.0.tar.gz"
     PATCH_COMMAND patch -N -p0 -i ${GraphLab_SOURCE_DIR}/patches/tcmalloc.patch || true
     CONFIGURE_COMMAND <SOURCE_DIR>/configure --enable-frame-pointers --prefix=<INSTALL_DIR> ${tcmalloc_shared}
     INSTALL_DIR ${GraphLab_SOURCE_DIR}/deps/local)
@@ -310,8 +308,7 @@ endif()
 # OpenCV =================================================================
 ExternalProject_Add(opencv
   PREFIX ${GraphLab_SOURCE_DIR}/deps/opencv
-  URL http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.9/opencv-2.4.9.zip/download
-  # URL_MD5 010b63a2542c4ec4918c8cb431c00356
+  URL "https://github.com/opencv/opencv/archive/2.4.9.tar.gz"
   PATCH_COMMAND patch -N -p0 cmake/OpenCVModule.cmake -i ${GraphLab_SOURCE_DIR}/patches/opencv_apple_rpath.patch || true
   CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
   -DBUILD_TESTS=OFF -DBUILD_PERF_TESTS=OFF -DBUILD_PACKAGE=OFF -DBUILD_EXAMPLES=OFF -DOPENCV_BUILD_3RDPARTY_LIBS=ON -DBUILD_SHARED_LIBS=ON -DBUILD_DOCS=OFF -DBUILD_JPEG=ON -DCMAKE_INCLUDE_PATH=${GraphLab_SOURCE_DIR}/deps/local/include -DWITH_CUBLAS=OFF -DWITH_1394=OFF -DWITH_AVFOUNDATION=OFF -DWITH_CUDA=OFF -DWITH_CUFFT=OFF -DWITH_FFMPEG=OFF -DWITH_GSTREAMER=OFF -DWITH_GTK=OFF -DWITH_QUICKTIME=OFF -DWITH_VIDEOINPUT=OFF -DWITH_XIMEA=OFF -DWITH_XINE=OFF -DWITH_V4L=OFF -DWITH_UNICAP=OFF -DWITH_QT=OFF -DWITH_JASPER=NO -DWITH_TIFF=NO -DWITH_OPENCL=OFF -DCMAKE_LIBRARY_PATH=${GraphLab_SOURCE_DIR}/deps/local/lib
@@ -347,16 +344,14 @@ endmacro(requires_opencv)
 if (APPLE)
   ExternalProject_Add(libevent
     PREFIX ${GraphLab_SOURCE_DIR}/deps/event
-    URL http://iweb.dl.sourceforge.net/project/levent/libevent/libevent-2.0/libevent-2.0.18-stable.tar.gz
-    URL_MD5 aa1ce9bc0dee7b8084f6855765f2c86a
+	URL https://github.com/downloads/libevent/libevent/libevent-2.0.18-stable.tar.gz
     CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=<INSTALL_DIR> --disable-openssl --enable-shared=no
     INSTALL_DIR ${GraphLab_SOURCE_DIR}/deps/local
   )
 else()
   ExternalProject_Add(libevent
     PREFIX ${GraphLab_SOURCE_DIR}/deps/event
-    URL http://iweb.dl.sourceforge.net/project/levent/libevent/libevent-2.0/libevent-2.0.18-stable.tar.gz
-    URL_MD5 aa1ce9bc0dee7b8084f6855765f2c86a
+	URL https://github.com/downloads/libevent/libevent/libevent-2.0.18-stable.tar.gz
     CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=<INSTALL_DIR> --disable-openssl --enable-shared=no
     INSTALL_DIR ${GraphLab_SOURCE_DIR}/deps/local
     INSTALL_COMMAND prefix=<INSTALL_DIR>/ make install && ${GraphLab_SOURCE_DIR}/patches/libevent_clean_and_remap.sh <INSTALL_DIR>/lib
diff --git a/src/graphlab/parallel/fiber_control.hpp b/src/graphlab/parallel/fiber_control.hpp
index f7b322415..e2b0568d0 100644
--- a/src/graphlab/parallel/fiber_control.hpp
+++ b/src/graphlab/parallel/fiber_control.hpp
@@ -41,7 +41,7 @@ namespace graphlab {
 class fiber_control {
  public:
 
-  typedef fixed_dense_bitset<64> affinity_type;
+  typedef fixed_dense_bitset<128> affinity_type;
   static affinity_type all_affinity();
 
   struct fiber {