diff -ru httpd-2.0.50.orig/modules/experimental/mod_disk_cache.c httpd-2.0.50/modules/experimental/mod_disk_cache.c
--- httpd-2.0.50.orig/modules/experimental/mod_disk_cache.c	2004-02-09 21:53:16.000000000 +0100
+++ httpd-2.0.50/modules/experimental/mod_disk_cache.c	2004-08-18 22:28:46.000000000 +0200
@@ -116,7 +116,8 @@
         *p = '\0';
 
         rv = apr_dir_make(file, 
-                          APR_UREAD|APR_UWRITE|APR_UEXECUTE, pool);
+                          APR_UREAD|APR_UWRITE|APR_UEXECUTE|
+                          APR_GREAD|APR_GWRITE|APR_GEXECUTE, pool);
         if (rv != APR_SUCCESS && !APR_STATUS_IS_EEXIST(rv)) {
             /* XXX */
         }
@@ -135,6 +136,24 @@
     /* move the data over */
     if (dobj->fd) {
         apr_file_flush(dobj->fd);
+        /* Check if connection has been aborted. Do not rename the temporary
+         * file in this case but simply delete it. Reason: Aborted connections
+         * may lead to incomplete data files which MUST not be cached as
+         * they deliver incomplete content in future requests.
+         */
+        if (r->connection->aborted) {
+            apr_file_close(dobj->fd);
+            dobj->fd = NULL;
+            rv = apr_file_remove(dobj->tempfile, r->pool);
+            if (rv != APR_SUCCESS) {
+                /* XXX log */
+            }
+            ap_log_error(APLOG_MARK, APLOG_INFO, 0, r->server,
+                         "cache_disk: Discarding body for URL %s "
+                         "because connection has been aborted.",
+                         h->cache_obj->key);
+            return APR_INCOMPLETE;
+        }
         if (!dobj->datafile) {
             dobj->datafile = data_file(r->pool, conf->dirlevels, conf->dirlength,
                                        conf->cache_root, h->cache_obj->key);
@@ -631,7 +650,7 @@
     if (!dobj->fd) {
         rv = apr_file_open(&dobj->fd, dobj->tempfile, 
                            APR_WRITE | APR_CREATE | APR_BINARY| APR_TRUNCATE | APR_BUFFERED,
-                           APR_UREAD | APR_UWRITE, r->pool);
+                           APR_OS_DEFAULT, r->pool);
         if (rv != APR_SUCCESS) {
             return rv;
         }
@@ -643,9 +662,10 @@
         apr_file_write(dobj->fd, str, &length);
     }
     if (APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(b))) {
-        file_cache_el_final(h, r);    /* Link to the perm file, and close the descriptor  */
-        ap_log_error(APLOG_MARK, APLOG_INFO, 0, r->server,
-                     "disk_cache: Cached body for URL %s",  dobj->name);
+        if (file_cache_el_final(h, r) == APR_SUCCESS) {    /* Link to the perm file, and close the descriptor  */
+            ap_log_error(APLOG_MARK, APLOG_INFO, 0, r->server,
+                         "disk_cache: Cached body for URL %s",  dobj->name);
+        }
     }
 
     return APR_SUCCESS;