diff --git a/boost.changes b/boost.changes
index 788fad1..1694c42 100644
--- a/boost.changes
+++ b/boost.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Wed Jan 23 13:30:18 UTC 2013 - BSipos@rkf-eng.com
+
+- Require package for ICU having same minimum version that the build requires.
+- Avoid obsoleting older versions of boost documentation to allow multiple boost package versions in same environment.
+
+-------------------------------------------------------------------
+Thu Jan 17 14:21:58 UTC 2013 - opensuse@dstoecker.de
+
+- use bzip2 instead of xz to support older SUSE releases
+
 -------------------------------------------------------------------
 Thu Sep  6 13:12:38 UTC 2012 - cfarrell@suse.com
 
diff --git a/boost.spec b/boost.spec
index 35e0fe1..17021e0 100644
--- a/boost.spec
+++ b/boost.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package boost
 #
-# Copyright (c) 2012 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -68,10 +68,9 @@ BuildRequires:  dos2unix
 BuildRequires:  gcc-c++
 BuildRequires:  libbz2-devel
 BuildRequires:  libexpat-devel
-BuildRequires:  libicu-devel
+BuildRequires:  libicu-devel >= 4.4
 BuildRequires:  python-devel
 BuildRequires:  xorg-x11-devel
-BuildRequires:  xz
 %if %build_mpi
 BuildRequires:  openmpi-devel
 %endif
@@ -95,8 +94,8 @@ Version:        1.49.0
 Release:        0
 Source0:        %{name}_%{file_version}.tar.bz2
 Source1:        boost-rpmlintrc
-Source2:        %{name}_%{short_version}_man.tar.xz
-Source3:        %{name}_%{short_version}_pdf.tar.xz
+Source2:        %{name}_%{short_version}_man.tar.bz2
+Source3:        %{name}_%{short_version}_pdf.tar.bz2
 Source4:        existing_extra_docs
 #Source5:        NEWS
 Patch1:         boost-thread.patch
@@ -148,7 +147,6 @@ the documentation packages (html, man or pdf).
 Summary:        Boost License
 Group:          Development/Libraries/C and C++
 Provides:       boost-license = %{version}-%{release}
-Obsoletes:      boost-license < %{version}
 %if 0%{?suse_version} >= 1120
 BuildArch:      noarch
 %endif
diff --git a/boost_1_49_man.tar.bz2 b/boost_1_49_man.tar.bz2
new file mode 100644
index 0000000..960be64
--- /dev/null
+++ b/boost_1_49_man.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd5aa35b25f6ed106cd24997e785f4f2f54886f02e0b355a2f637f8b4307b04c
+size 418939
diff --git a/boost_1_49_man.tar.xz b/boost_1_49_man.tar.xz
deleted file mode 100644
index 2ea1428..0000000
--- a/boost_1_49_man.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:2bc5dc84bf438e935593cd721275cb6a9bb64cc59c7f68841d36aea589830a12
-size 408676
diff --git a/boost_1_49_pdf.tar.bz2 b/boost_1_49_pdf.tar.bz2
new file mode 100644
index 0000000..85551a0
--- /dev/null
+++ b/boost_1_49_pdf.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:017871c6bdfea38c190f8585190698de5c1ef65b2c7ec5f68cdb321807949720
+size 31345645
diff --git a/boost_1_49_pdf.tar.xz b/boost_1_49_pdf.tar.xz
deleted file mode 100644
index ef6a03c..0000000
--- a/boost_1_49_pdf.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:adf413b5771545ba1b0b61c4e4e8151639b6e3beb7d097fa504dad10e59e04ab
-size 28755588