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Could it be related to this article: https://blog.sucuri.net/2016/10/credentials-stealer-prestashop.html ?

Hi, This problem also happened to me (Prestashop 1.6.1.10). And I can handle it by the way mentioned above. thanks. But I was wondering why AdminLoginController.php file suddenly become empty? Anyone know why? I'm using Ubuntu 14:04 for the OS on the webserver.

Well, I'm still figuring out beyond this forum regarding the appropriate configuration of APCu and Opcache (best practice).

Based on my experience, it's better to use a "file system" cache type, the process is faster. But I'm sure, which one is better, depending on the conditions of each website environment.

Based on my temporary observations, here are the results after using Opcache and APCu: - Opcache [enabled] + APCu [disabled] -> stable - Opcache [enabled] + APCu [enabled] -> unstable (sometimes websites can be opened quickly, sometimes websites can not be opened, or sometimes appear messy). Opcache and APCu configuration that I use, is as follows: Additional information: CPU Server:12 cores (Intel Xeon) RAM: 8 GB OS: Ubuntu 14.04 (64-bit) Do you have any suggestions for APCu and Opcache configuration? For a while I just use opcache

Thank you. Now i'm trying to install and enable opcache and APCu. Let's see what happen.

So is there any another suggestion?

Sorry I was wrong provides links to the article (perhaps I was sleepy hehe). Article link I mean is this: http://build.prestashop.com/news/prestashop-1-6-1-0-performances/

Thank you for your response. But sorry, does this mean Prestashop 1.6.1.0 can not yet utilize Memcached properly? Based on this article, supposedly Memcached can improve Prestashop 1.6.1.0's performance.

Dear all, --- Technical information --- Prestashop version: 1.6.1.0 Server: Ubuntu Linux x86_64 14:04 Webserver: Apache PHP version: 5.5.9-1ubuntu4.11 Memory limit: 1024M Max execution time: 0 MySQL version: 5.5.43-0ubuntu0.14.04.1 MySQL engines: MyISAM Memcached version: (see screenshot) --- / Technical information --- I have upgraded my site that have been using Prestashop, from version 1.6.0.14 to version 1.6.1.0. At version 1.6.1.0 I try to use Memcached, but the result is odd, as follows: 1. Based on the analysis by using Newrelic, "Web Transactions response time" will increase (poor condition, relatively slow loading website) if Memcached enabled (see "Web Transactions response time" screenshot and "memcached Settings" screenshot). But if Memcached is disabled, then "Web Transactions response time "decreased (good condition, relatively fast loading website). 2. When I open two or more "product category pages" (eg categories A, B, and C) and using "Block Layered Navigation" module, then shown on website is the same products, but different product category. Seems to be the problem with its cache. Can anyone help me to solve this problem? For a while, I disable Memcached. I hope anyone can help me. Thank you.

I hope future Prestashop version can do this.

I think Prestashop must provide an invoice in plain text form in addition to the PDF form. Because Dotmatrix printer may be operated optimally when printing plain text documents. In addition, there are many offices that still require dotmatrix printer.

I think Prestashop need to provide an option for users: - display the out of stock product, or - do not display (hide) the out of stock product Can use PREFIX_product.quantity> 0 when doing database queries.

I agree with you. This is essential.

Thanks buat sarannya. Ntar dicoba. Tapi sementara ini saya nyobanya begini: 1. Semua check-list saya un-check. Simpan. 2. Lalu check yang perlu2 saja (sedikit) pada salah satu cara payment tertentu utk negara tertentu. Simpan. Dan it's work. I don't know kenapa. Masih heran.