Downloading configuration on Pharo1.3 and Pharo1.4 freezes my image

Hi!

Some students had their Pharo1.3 and Pharo1.4 images freezed when executing the following script:

Gofer it
    squeaksource: 'ObjectBrowser';
    package: 'ConfigurationOfObjectBrowser';
    load.
   
(ConfigurationOfObjectBrowser project version: #bleedingEdge) load

I've reproduced it with the last images from Hudson/Jenkins, and they allways freeze on the Cleaning up step...
On the other hand, it loads correctly on latest 1.2...

Does anybody have an idea of what's happening?

Thanks,
Guille