diff --git a/etc/config/settings.csh b/etc/config/settings.csh
index 27ad49aea859fac9b08a5abaed3711c06195a049..be510764fd5cade17fdfbe5f81a27020790a24a5 100644
--- a/etc/config/settings.csh
+++ b/etc/config/settings.csh
@@ -219,7 +219,7 @@ case ThirdParty:
     case Gcc++0x:
     case Gcc46:
     case Gcc46++0x:
-        set gcc_version=gcc-4.6.2
+        set gcc_version=gcc-4.6.1
         set gmp_version=gmp-5.0.4
         set mpfr_version=mpfr-3.1.0
         set mpc_version=mpc-0.9
@@ -238,17 +238,6 @@ case ThirdParty:
         set mpfr_version=mpfr-2.4.2
         set mpc_version=mpc-0.8.1
         breaksw
-    case Gcc44:
-    case Gcc44++0x:
-        set gcc_version=gcc-4.4.3
-        set gmp_version=gmp-5.0.1
-        set mpfr_version=mpfr-2.4.2
-        breaksw
-    case Gcc43:
-        set gcc_version=gcc-4.3.3
-        set gmp_version=gmp-4.2.4
-        set mpfr_version=mpfr-2.4.1
-        breaksw
     case Clang:
         # using clang - not gcc
         setenv WM_CC 'clang'
diff --git a/etc/config/settings.sh b/etc/config/settings.sh
index ad336dd871e0492cadfe1d3053de13d1857f4533..12d6f4b9004d13dbe48f3636234b14eef19b6cb0 100644
--- a/etc/config/settings.sh
+++ b/etc/config/settings.sh
@@ -240,12 +240,6 @@ fi
 case "${foamCompiler}" in
 OpenFOAM | ThirdParty)
     case "$WM_COMPILER" in
-    Gcc463)
-        gcc_version=gcc-4.6.3
-        gmp_version=gmp-5.0.2
-        mpfr_version=mpfr-3.0.1
-        mpc_version=mpc-0.9
-        ;;
     Gcc | Gcc++0x | Gcc46 | Gcc46++0x)
         gcc_version=gcc-4.6.1
         gmp_version=gmp-5.0.4
@@ -264,16 +258,6 @@ OpenFOAM | ThirdParty)
         mpfr_version=mpfr-2.4.2
         mpc_version=mpc-0.8.1
         ;;
-    Gcc44 | Gcc44++0x)
-        gcc_version=gcc-4.4.3
-        gmp_version=gmp-5.0.1
-        mpfr_version=mpfr-2.4.2
-        ;;
-    Gcc43)
-        gcc_version=gcc-4.3.3
-        gmp_version=gmp-4.2.4
-        mpfr_version=mpfr-2.4.1
-        ;;
     Clang)
         # using clang - not gcc
         export WM_CC='clang'