Index: modules/cache/mod_disk_cache.c
===================================================================
--- modules/cache/mod_disk_cache.c	(revision 949257)
+++ modules/cache/mod_disk_cache.c	(working copy)
@@ -330,6 +330,14 @@
         return DECLINED;
     }
 
+    /* we don't support caching of range requests (yet) */
+    if (r->status == HTTP_PARTIAL_CONTENT) {
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
+                     "disk_cache: URL %s partial content response not cached",
+                     key);
+        return DECLINED;
+    }
+
     /* Allocate and initialize cache_object_t and disk_cache_object_t */
     h->cache_obj = obj = apr_pcalloc(r->pool, sizeof(*obj));
     obj->vobj = dobj = apr_pcalloc(r->pool, sizeof(*dobj));