yes , this is always my concerning, because i will do a site with 4 section, about 100 folders,10000 links and more than 1000 flash games. so i want to find some suitable CMS, but ez is the one of them which can provide easy customization. so i take it as my CMS now though i do not know whether it can perform excilently.
i think the most inconvenience is the info collection. because i find ez can goes soothly for content with cache system,but it does bad in registering,submit posts etc. such info-collecting processes.i am also met this phenomenon on ez.no when i submit topic.
soon i will provide blog, forum,and album etc. ,and will have thousands users,i wish ez guys spent some precious time on improving performence of info-collection.