Simplepie and cache

[arena]

Sometimes, transient_feed (rss feed cache) cannot be unserialized.

see attached file (content of the options table)

with this code in settings.php

if ( file_exists(WP_CONTENT_DIR . '/object-cache.php') ) {
    require_once (WP_CONTENT_DIR . '/object-cache.php');
    $_wp_using_ext_object_cache = true;
} else {
    require_once (ABSPATH . WPINC . '/cache.php');
    $_wp_using_ext_object_cache = false;
}

not sure rss feed caching works when custom caching !