grub-mkconfig does not get it right when sorting "recent kernel first":

sort kernel versions correctly:

Wrong:
        echo    'Loading Linux 3.0.8-1 ...'
        echo    'Loading Linux 3.0.4-2 ...'
        echo    'Loading Linux 3.0.13-1 ...'
        echo    'Loading Linux 3.0.12-2 ...'
        echo    'Loading Linux 2.6.38.8-1 ...'

Correct:
        echo    'Loading Linux 3.0.13-1 ...'
        echo    'Loading Linux 3.0.12-2 ...'
        echo    'Loading Linux 3.0.8-1 ...'
        echo    'Loading Linux 3.0.4-2 ...'
        echo    'Loading Linux 2.6.38.8-1 ...'

--- grub-1.99/util/grub-mkconfig_lib.in~	2012-01-12 00:47:28.626740879 +0200
+++ grub-1.99/util/grub-mkconfig_lib.in	2012-01-12 00:53:49.554292436 +0200
@@ -165,7 +165,7 @@
     a="$b"
     b="$c"
   fi
-  if (echo "$a" ; echo "$b") | sort -n | head -n 1 | grep -qx "$b" ; then
+  if (echo "$a" ; echo "$b") | sort -V | head -n 1 | grep -qx "$b" ; then
     return 0
   else
     return 1