Preload not stoping

Hi,
if i want stop the cache preload, i only get the text.

“Scheduled preloading of cache almost cancelled. It may take up to a minute for it to cancel completely.”

The stop_preload.txt is created on the server.

In the error log i get this

09:50:40 30216 /wp-admin/admin-ajax.php wp_cache_get_cookies_values: Login/postpass cookie detected
09:50:40 30216 /wp-admin/admin-ajax.php wp_cache_get_cookies_values: return: 6f8e5a0efb0b5fac5a764bd8ddbaa9c9
09:50:40 30216 /wp-admin/admin-ajax.php In WP Cache Phase 2
09:50:40 30216 /wp-admin/admin-ajax.php Setting up WordPress actions
09:50:40 30216 /wp-admin/admin-ajax.php Not caching wp-admin requests.
09:50:42 30220 /wp-admin/options-general.php?page=wpsupercache&tab=preload wp_cache_get_cookies_values: Login/postpass cookie detected
09:50:42 30220 /wp-admin/options-general.php?page=wpsupercache&tab=preload wp_cache_get_cookies_values: return: 6f8e5a0efb0b5fac5a764bd8ddbaa9c9
09:50:42 30220 /wp-admin/options-general.php?page=wpsupercache&tab=preload In WP Cache Phase 2
09:50:42 30220 /wp-admin/options-general.php?page=wpsupercache&tab=preload Setting up WordPress actions
09:50:42 30220 /wp-admin/options-general.php?page=wpsupercache&tab=preload Not caching wp-admin requests.
09:50:42 30220 /wp-admin/options-general.php?page=wpsupercache&tab=preload maybe_stop_gc: GC flag not found. GC will go ahead..
09:50:42 30220 /wp-admin/options-general.php?page=wpsupercache&tab=preload wpsc_cancel_preload: creating stop_preload.txt
09:50:42 30220 /wp-admin/options-general.php?page=wpsupercache&tab=preload wp_cache_replace_line: setting not changed - $wp_cache_slash_check = 1;

If i reload the tab after some minutes, it just saying, preload 0-100.