Hi, got a couple of questions about a range of subjects, hopefully simple. 1. php and caching: i had migrated some sites, all configured to use php-fpm (5.6) but only just noticed that they weren't configured to use a socket for php-fpm. i was put onto this after noticing that google search results were linking to site content on the server, but using the domain name of another site on the same server (quite a few different domain url's actually) i'm assuming this is either the php-fpm socket config, or the sites sharing the cache. i followed the perfect server guide for ubuntu 14.04 with apache, so memcached, xcache etc is installed. if it isn't the php-socket, and is the caching, how do i keep each sites php cache separate? i would have thought the perfect install guide would have already taken care of such issue. 2. i'm using ubuntu14.04, i want to go to 16.04, but would prefer to clean install a new server rather than upgrade. any issues with replacing a server this way? it's a multiserver install. i know about backing up /etc /opt et al. i assume doing a new perfect install (same name and ip) will cover /etc, so restoring /opt /etc/php5/fpm/pool.d/ /etc/apache2/sites/available (and enabled) would cover it, /var/www is a mounted nfs share. just shutting down the old server and putting the new one in it's place would be ok? 3. additional php versions, i've already got this, default is 5.6, additional is 7.0.3 (would reverse that with a new install as per question 2) what's the best way to install any php extensions to the additional php version. eg, apt-get install php-tidy would only do the default php. would apt-get install php7.0-tidy install it to the actual installed location (/opt/php-7.0.3), or would it assume everything's in the default location? 4. mysql 5.7 mysql has changed how it handles passwords, with auto-expiry etc by default. how does ispconfig 3.1.2 handle this? thanks lee.