Gem remote install or update fails

I cannot get any gem command that involves: ‘Bulk updating Gem source
index for: http://gems.rubyforge.org/’ to work. I just want to install
Rails. Should be simple. I am not behind a proxy. I’ve tried the ‘no-
http-proxy’ option. I’ve searched this problem through thousands of
posts. I’ve tries different ruby versions (182,184 and lateset 186). I
running windows XP. Immensely frustrated.

Error I get is:
gem install rails --v 1.2.3 --source=http://gems.rubyforge.org/
Bulk updating Gem source index for: http://gems.rubyforge.org/
ERROR: While executing gem … (RuntimeError)
Non-HTTP proxy URI: 4001

OR if I do not use ‘no-http-proxy’:

C:\Documents and Settings\Hans>gem update
Updating installed gems…
Bulk updating Gem source index for: http://gems.rubyforge.org
ERROR: While executing gem … (URI::InvalidURIError)
bad URI(is not URI?): ://:

Rails and rubygems have moved to github. I am also experiencing problems
in updating my gems

That’s the error message I got when trying to update Thin:

sudo gem update thin
Updating installed gems
Bulk updating Gem source index for: http://gems.rubyforge.org/
Updating metadata for 300 gems from http://gems.github.com/
…Failed to download spec
saucytiger-LivePipe UI-0.9.1 from http://gems.github.com/:
bad URI(is not URI?): quick/saucytiger-LivePipe
UI-0.9.1.gemspec.rz
…Failed
to download spec fatjam-acts_as_revisable-0.7 from
http://gems.github.com/:
Gem::RemoteFetcher::FetchError: bad response Not Found 404
reading
http://gems.github.com/quick/fatjam-acts_as_revisable-0.7.gemspec.rz
.Failed to download spec matta-sdruby-raffle-0.0.1 from
http://gems.github.com/:
Gem::RemoteFetcher::FetchError: bad response Not Found 404
reading
http://gems.github.com/quick/matta-sdruby-raffle-0.0.1.gemspec.rz
More blabla…

I think I have missed something in the Rails bubble.