diff --git a/status/explicit-failures-markup.xml b/status/explicit-failures-markup.xml
index 004290c6b0..1e091e05a0 100644
--- a/status/explicit-failures-markup.xml
+++ b/status/explicit-failures-markup.xml
@@ -1854,7 +1854,6 @@
             <toolset name="borland-cb2009"/>
             <toolset name="borland-cb2010"/>
             <toolset name="sun-5.10"/>
-            <toolset name="pgi-10.1"/>
             <toolset name="vacpp"/>
             <toolset name="vacpp-10.1"/>
             <toolset name="msvc-7.1"/>
@@ -1862,6 +1861,24 @@
                 These compilers do not support features that are essential for the library.
             </note>
         </mark-unusable>
+        <mark-unusable>
+            <toolset name="intel-darwin-11.1"/>
+            <note author="Barend Gehrels">
+                Intel 11.1 on Darwin raises a SIGSEGV in almost all unit tests.
+            </note>
+        </mark-unusable>
+        <mark-unusable>
+            <toolset name="pgi-11.2"/>
+            <note author="Barend Gehrels">
+                pgi 11.1 does not support BOOST_AUTO and is not configured for UBLAS
+            </note>
+        </mark-unusable>
+        <mark-unusable>
+            <toolset name="msvc-9.0~wm5~stlport5.2"/>
+            <note author="Barend Gehrels">
+                This configruation is not well configured for UBLAS
+            </note>
+        </mark-unusable>
     </library>
     
     <!-- gil -->