Morning. My file function is working. I have not done the test as Wordfence had another fork error this morning as it ran its daily automatic check.
This is what I see in the APACHE-ACCESSLOG:
07/Feb/2014:08:07:55 +0100 GET /wp-admin/admin-ajax.php?action=wordfence_doScan&isFork=1&cronKey=57791f1546322259e3ca411 HTTP/1.0 200 3781
07/Feb/2014:08:07:55 +0100 GET /wp-admin/admin-ajax.php?action=wordfence_doScan&isFork=1&cronKey=2c7544df66c3454654bca75f HTTP/1.0 200 3782
07/Feb/2014:08:07:46 +0100 POST /wp-admin/admin-ajax.php?action=wordfence_testAjax HTTP/1.0 200 3817
07/Feb/2014:08:07:43 +0100 GET /wp-admin/admin-ajax.php?action=wordfence_doScan&isFork=0&cronKey=1b7eb006fe4bf885e0b2cf2 HTTP/1.0 200 3782
07/Feb/2014:08:07:43 +0100 POST /wp-cron.php?doing_wp_cron=1391756827.0595591068267822265625 HTTP/1.0 200 3675
07/Feb/2014:08:07:29 +0100 POST /wp-admin/admin-ajax.php?action=wordfence_testAjax HTTP/1.0 200 3818
07/Feb/2014:08:07:11 +0100 POST /wp-admin/admin-ajax.php?action=wordfence_testAjax HTTP/1.0 200 3817
In the APACHE-ERRORLOG and the MYSQL5-SLOW-QUERY-LOG log I see nothing.
I wait for your thoughts before I do the test you suggested.