Redmine

It's good, i just comment the RAILS_VERSION to use the last :).

Thank you.

Please note that Redmine won't work with lastest Rails version (2.2.2).
2.1.2 is required.

i have
actionmailer (2.1.0)
actionpack (2.1.0)
activerecord (2.1.0)
activeresource (2.1.0)
activesupport (2.2.2, 2.1.0)
fastthread (1.0.1)
passenger (2.0.3)
rack (0.4.0)
rails (2.1.0)
rake (0.8.3, 0.8.1)
tzinfo (0.3.9)

Any idea about the problem of rails upgrade ? (freezing)

I don't have any clue about your gem problem.
But you can download the 0.8 RC at rubyforge and and move /vendor/rails to your checkout. It should work.

Ive seen this error before, but only on low memory VPS slices. just kill the gem process and try again. sometimes I see it on my slice (256mb ram vps)

Yes, i launched ruby & redmine on a vmware system with 512 Mb ram. I updated my system manually and it works fine, thank you.

Hum after a reboot, i have an error with passenger :
Error message:
uninitialized constant ActionView::TemplateFinder
Exception class:
NameError

And i have :
actionmailer (2.2.2, 2.1.2, 2.1.0)
actionpack (2.2.2, 2.1.2, 2.1.0)
activerecord (2.2.2, 2.1.2, 2.1.0)
activeresource (2.2.2, 2.1.2, 2.1.0)
activesupport (2.2.2, 2.1.2, 2.1.0)
fastthread (1.0.1)
mysql (2.7)
passenger (2.0.6, 2.0.5, 2.0.3)
rack (0.4.0)
rails (2.2.2, 2.1.2, 2.1.0)
rake (0.8.3, 0.8.1)
tzinfo (0.3.12, 0.3.9)

How to tell to redmine to use the good version ?

Thank you.

it's good :)