2.4.x patch: http://people.apache.org/~minfrin/httpd-mod_cache-nostore2.4.patch
+1: minfrin
+ * mod_cache: Ensure that updated responses to HEAD requests don't get
+ mistakenly paired with a previously cached body. Ensure that any existing
+ body is removed when a HEAD request is cached.
+ trunk patch: http://svn.apache.org/r1479411
+ 2.4.x patch: trunk patch works (minus CHANGES)
+ +1: minfrin
+
A list of further possible backports can be found at:
http://people.apache.org/~rjung/patches/possible-backports-httpd-trunk-2_4.txt