It's not a fud :) I promise.
Only what it happened.
And you don't read carefully my post.One example: I didn't write you are forced use Mac app Store to install program, I wrote I read about Mountain Lion, by default you must install from MacAppStore. And I asked "what in the future?". With iPad and iPhone you can't choose your app provider.
And about, the memory management problem, I used to read this sort of answer: "It doesnt come to me so, it doesn't exist".
I'm a Grails developer but when friends asked me to develop their web site for an association, I had to learn PHP. Why? Economic reasons! Web hosting pricing are divided by three (3$ vs 9$) between PHP and Grails/JVM website hosting.
Before that, I'd prejudices on PHP like it's ugly, inelegant. And it can be that. PHP is like C language: you can do bad code, ugly implementation if you aren't rigorous.
And it's your project is a "standard" website (i.e. only display page and make some SQL queries), PHP is good enough. No need to use a canon for killing a fly.
The Clojure's start-up is slow because the source files are compiled. But once your program is launched, its perfs are correct and very close to Java. About the immutable data structure, don't forget each method doesn't return a copy of the data. It's more clever using changes detection.
You can read a lot of information about this part of Clojure in the book "Practical Clojure". I'm reading it and I'm learning some stuffs about Clojure.
To conclude, Clojure is fine for "long" program running.
And about, the memory management problem, I used to read this sort of answer: "It doesnt come to me so, it doesn't exist".
EDIT: And about the file system, I wanted to talk about http://forums.appleinsider.com/t/143744/mountain-lion-brings...