I find it weird that the downloaded one has a drastically slower REPL 
startup than when compiled from github repo.

$ where julia
/Applications/Julia-0.3.0-prerelease-0b05b21911.app/Contents/Resources/julia/bin/julia
/usr/local/bin/julia

I'm symlinking $HOME/julia/julia to /usr/local/bin/julia

Here's the startup times

Downloaded:

time julia -e 'println("Helo")'
5.07s user 0.10s system 98% cpu 5.250 total

Source:

time /usr/local/bin/julia -e 'println("Helo")'
0.28s user 0.08s system 117% cpu 0.308 total

The versions are 1 day old from each other.

Downloaded:

               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
   _ _   _| |_  __ _   |  Type "help()" to list help topics
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.3.0-prerelease+3053 (2014-05-14 22:03 
UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit 0b05b21* (2 days old master)
|__/                   |  x86_64-apple-darwin12.5.0


Source:

              _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
   _ _   _| |_  __ _   |  Type "help()" to list help topics
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.3.0-prerelease+3081 (2014-05-16 15:12 
UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit eb4bfcc (1 day old master)
|__/                   |  x86_64-apple-darwin13.1.0

The main thing I notice is the apple-darwin12.5.0 vs apple-darwin13.1.0. 
I'm not sure what that means. I'm on OSX 10.9.2.

Dom

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