symfony installation with svn:externals

I am trying to install symfony from subversion but when I try to commit, I have to login.

The steps I did:

$ svn co http://svn.symfony-project.com/branches/1.4 
$ svn pe symfony/
  entering http://svn开发者_运维百科.symfony-project.com/branches/1.4 and save
$ svn commit

(Authentication realm: http://svn.symfony-project.com:80 SVN).

I have no idea, what I should use as username and password. Is there a general login?

I appreciate any help. Thanks Andreas

To install symfony from svn, you just have to check out the symfony-project repository. Only the symfony developers team can commit on this repository and needs a username/password.

Did you follow these steps to install: Practical symfony - Day 1: Starting up the Project

?

I finally found my fault in this post: What's the benefits of "svn:externals"?:

After 'svn pe symfony/' you have to type

$ svn commit -m "add externals" 

instead of 'svn commit'. It works then, like I want it.