leiningen problem

gistfile1.sh

$ java -version
java version "1.6.0_31"
Java(TM) SE Runtime Environment (build 1.6.0_31-b04-415-11M3635)
Java HotSpot(TM) 64-Bit Server VM (build 20.6-b01-415, mixed mode)

$ lein2 -v
Leiningen 2.0.0-preview4 on Java 1.6.0_31 Java HotSpot(TM) 64-Bit Server VM

$ lein2 new project
Generating a project called project based on the 'default' template.

$ cd project/
$ more project.clj 
(defproject project "0.1.0-SNAPSHOT"
  :description "FIXME: write description"
  :url "http://example.com/FIXME"
  :license {:name "Eclipse Public License"
            :url "http://www.eclipse.org/legal/epl-v10.html"}
  :dependencies [[org.clojure/clojure "1.3.0"]])

$ lein2 repl
nREPL server started on port 54499
Welcome to REPL-y!
Clojure 1.2.0
    Exit: Control+D or (exit) or (quit)
Commands: (user/help)
    Docs: (doc function-name-here)
          (find-doc "part-of-name-here")
nil  Source: (source function-name-here)
          (user/sourcery function-name-here)
 Javadoc: (javadoc java-object-or-class-here)
Examples from clojuredocs.org: [clojuredocs or cdoc]
          (user/clojuredocs name-here)
          (user/clojuredocs "ns-here" "name-here")

user=> *clojure-version*
{:major 1, :minor 2, :incremental 0, :qualifier ""}
user=> 

I've just copy/pasted commands from a shell to show my problem.

I do not understand why lein2 uses 1.2.0 clojure version instead of 1.3.0
Dependencies in 'project' are limited to :dependencies [[org.clojure/clojure "1.3.0"]]

OK, just deleted "guilty" here :
/Library/Java/Extensions/clojure.jar

Everything's OK now !