diff --git a/glibc-2.13-onlyenus.patch b/glibc-2.13-onlyenus.patch
new file mode 100644
index 0000000..26886bc
--- /dev/null
+++ b/glibc-2.13-onlyenus.patch
@@ -0,0 +1,161 @@
+diff -ru glibc-2.13/localedata/SUPPORTED glibc-2.13-onlyenus/localedata/SUPPORTED
+--- glibc-2.13/localedata/SUPPORTED	2011-11-25 16:58:19.729182658 +0100
++++ glibc-2.13-onlyenus/localedata/SUPPORTED	2011-11-25 16:56:20.001281100 +0100
+@@ -1,155 +1,7 @@
+ # This file names the currently supported and somewhat tested locales.
+ # If you have any additions please file a glibc bug report.
+ SUPPORTED-LOCALES=\
+-cs_CZ.UTF-8/UTF-8 \
+-cs_CZ/ISO-8859-2 \
+-da_DK.UTF-8/UTF-8 \
+-da_DK/ISO-8859-1 \
+-da_DK.ISO-8859-15/ISO-8859-15 \
+-de_AT.UTF-8/UTF-8 \
+-de_AT/ISO-8859-1 \
+-de_AT@euro/ISO-8859-15 \
+-de_BE.UTF-8/UTF-8 \
+-de_BE/ISO-8859-1 \
+-de_BE@euro/ISO-8859-15 \
+-de_CH.UTF-8/UTF-8 \
+-de_CH/ISO-8859-1 \
+-de_DE.UTF-8/UTF-8 \
+-de_DE/ISO-8859-1 \
+-de_DE@euro/ISO-8859-15 \
+-de_LU.UTF-8/UTF-8 \
+-de_LU/ISO-8859-1 \
+-de_LU@euro/ISO-8859-15 \
+-el_GR.UTF-8/UTF-8 \
+-el_GR/ISO-8859-7 \
+-el_CY.UTF-8/UTF-8 \
+-el_CY/ISO-8859-7 \
+-en_AG/UTF-8 \
+-en_AU.UTF-8/UTF-8 \
+-en_AU/ISO-8859-1 \
+-en_BW.UTF-8/UTF-8 \
+-en_BW/ISO-8859-1 \
+-en_CA.UTF-8/UTF-8 \
+-en_CA/ISO-8859-1 \
+-en_DK.UTF-8/UTF-8 \
+-en_DK/ISO-8859-1 \
+-en_GB.UTF-8/UTF-8 \
+-en_GB/ISO-8859-1 \
+-en_GB.ISO-8859-15/ISO-8859-15 \
+-en_HK.UTF-8/UTF-8 \
+-en_HK/ISO-8859-1 \
+-en_IE.UTF-8/UTF-8 \
+-en_IE/ISO-8859-1 \
+-en_IE@euro/ISO-8859-15 \
+-en_IN/UTF-8 \
+-en_NG/UTF-8 \
+-en_NZ.UTF-8/UTF-8 \
+-en_NZ/ISO-8859-1 \
+-en_PH.UTF-8/UTF-8 \
+-en_PH/ISO-8859-1 \
+-en_SG.UTF-8/UTF-8 \
+-en_SG/ISO-8859-1 \
+ en_US.UTF-8/UTF-8 \
+ en_US/ISO-8859-1 \
+ en_US.ISO-8859-15/ISO-8859-15 \
+-en_ZA.UTF-8/UTF-8 \
+-en_ZA/ISO-8859-1 \
+-en_ZW.UTF-8/UTF-8 \
+-en_ZW/ISO-8859-1 \
+-es_AR.UTF-8/UTF-8 \
+-es_AR/ISO-8859-1 \
+-es_BO.UTF-8/UTF-8 \
+-es_BO/ISO-8859-1 \
+-es_CL.UTF-8/UTF-8 \
+-es_CL/ISO-8859-1 \
+-es_CO.UTF-8/UTF-8 \
+-es_CO/ISO-8859-1 \
+-es_CR.UTF-8/UTF-8 \
+-es_CR/ISO-8859-1 \
+-es_DO.UTF-8/UTF-8 \
+-es_DO/ISO-8859-1 \
+-es_EC.UTF-8/UTF-8 \
+-es_EC/ISO-8859-1 \
+-es_ES.UTF-8/UTF-8 \
+-es_ES/ISO-8859-1 \
+-es_ES@euro/ISO-8859-15 \
+-es_GT.UTF-8/UTF-8 \
+-es_GT/ISO-8859-1 \
+-es_HN.UTF-8/UTF-8 \
+-es_HN/ISO-8859-1 \
+-es_MX.UTF-8/UTF-8 \
+-es_MX/ISO-8859-1 \
+-es_NI.UTF-8/UTF-8 \
+-es_NI/ISO-8859-1 \
+-es_PA.UTF-8/UTF-8 \
+-es_PA/ISO-8859-1 \
+-es_PE.UTF-8/UTF-8 \
+-es_PE/ISO-8859-1 \
+-es_PR.UTF-8/UTF-8 \
+-es_PR/ISO-8859-1 \
+-es_PY.UTF-8/UTF-8 \
+-es_PY/ISO-8859-1 \
+-es_SV.UTF-8/UTF-8 \
+-es_SV/ISO-8859-1 \
+-es_US.UTF-8/UTF-8 \
+-es_US/ISO-8859-1 \
+-es_UY.UTF-8/UTF-8 \
+-es_UY/ISO-8859-1 \
+-es_VE.UTF-8/UTF-8 \
+-es_VE/ISO-8859-1 \
+-fi_FI.UTF-8/UTF-8 \
+-fi_FI/ISO-8859-1 \
+-fi_FI@euro/ISO-8859-15 \
+-fil_PH/UTF-8 \
+-fr_BE.UTF-8/UTF-8 \
+-fr_BE/ISO-8859-1 \
+-fr_BE@euro/ISO-8859-15 \
+-fr_CA.UTF-8/UTF-8 \
+-fr_CA/ISO-8859-1 \
+-fr_CH.UTF-8/UTF-8 \
+-fr_CH/ISO-8859-1 \
+-fr_FR.UTF-8/UTF-8 \
+-fr_FR/ISO-8859-1 \
+-fr_FR@euro/ISO-8859-15 \
+-fr_LU.UTF-8/UTF-8 \
+-fr_LU/ISO-8859-1 \
+-fr_LU@euro/ISO-8859-15 \
+-hu_HU.UTF-8/UTF-8 \
+-hu_HU/ISO-8859-2 \
+-it_CH.UTF-8/UTF-8 \
+-it_CH/ISO-8859-1 \
+-it_IT.UTF-8/UTF-8 \
+-it_IT/ISO-8859-1 \
+-it_IT@euro/ISO-8859-15 \
+-ja_JP.EUC-JP/EUC-JP \
+-ja_JP.UTF-8/UTF-8 \
+-ko_KR.EUC-KR/EUC-KR \
+-ko_KR.UTF-8/UTF-8 \
+-nl_AW/UTF-8 \
+-nl_BE.UTF-8/UTF-8 \
+-nl_BE/ISO-8859-1 \
+-nl_BE@euro/ISO-8859-15 \
+-nl_NL.UTF-8/UTF-8 \
+-nl_NL/ISO-8859-1 \
+-nl_NL@euro/ISO-8859-15 \
+-pl_PL.UTF-8/UTF-8 \
+-pl_PL/ISO-8859-2 \
+-pt_BR.UTF-8/UTF-8 \
+-pt_BR/ISO-8859-1 \
+-sv_FI.UTF-8/UTF-8 \
+-sv_FI/ISO-8859-1 \
+-sv_FI@euro/ISO-8859-15 \
+-sv_SE.UTF-8/UTF-8 \
+-sv_SE/ISO-8859-1 \
+-sv_SE.ISO-8859-15/ISO-8859-15 \
+-tr_CY.UTF-8/UTF-8 \
+-tr_CY/ISO-8859-9 \
+-tr_TR.UTF-8/UTF-8 \
+-tr_TR/ISO-8859-9 \
+-zh_CN.GB18030/GB18030 \
+-zh_CN.GBK/GBK \
+-zh_CN.UTF-8/UTF-8 \
+-zh_CN/GB2312 \
+-zh_TW.EUC-TW/EUC-TW \
+-zh_TW.UTF-8/UTF-8 \
+-zh_TW/BIG5 \
++
+Only in glibc-2.13-onlyenus/localedata: SUPPORTED~
diff --git a/glibc.changes b/glibc.changes
index 25c1f18..706194d 100644
--- a/glibc.changes
+++ b/glibc.changes
@@ -1,3 +1,10 @@
+* Fri Nov 25 2011 Carsten Munk <carsten@merproject.org> - 2.13
+- Add glibc-2.13-onlyenus.patch, we're only interested in en_US locales
+  right now. For integrators, you can use localedef in your %post
+  sections in kickstart files to generate the locales you need. This 
+  shaves 3 minutes (at least) off cross builds of glibc and reduces
+  basic Mer footprint (uncompressed) with 34 mb.
+
 * Sat Sep 24 2011 Alistair Buxton <a.j.buxton@gmail.com> - 2.13
 - Add i486 conditionals to spec file.
 
diff --git a/glibc.spec b/glibc.spec
index 5649a18..c7c97e0 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -39,6 +39,7 @@ Patch7: cve-2011-1659.patch
 Patch8: glibc-2.13-locale.patch
 Patch9: glibc-arm-atomics-disable-qemu.patch
 Patch10: glibc-2.13-no-timestamping.patch
+Patch11: glibc-2.13-onlyenus.patch
 
 Provides: ldconfig
 # The dynamic linker supports DT_GNU_HASH
@@ -195,6 +196,7 @@ mv glibc-ports-2.13 ports
 %patch8 -p1
 %patch9 -p1
 %patch10 -p1
+%patch11 -p1
 
 cat > find_provides.sh <<EOF
 #!/bin/sh