[chef] Chef bootstrap installation -->gpg key not found on keyserver

[Till Brinkmann < >]

hi all,

I´m trying to install chef by using chef-solo bootstrap installation. I face a problem while importing gpg key from cookbook

log debug.....
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[Mon, 09 Jan 2012 13:50:50 +0000] INFO: Processing execute[install-key 2940ABA983EF826A] action run (/var/chef/cookbooks/apt/providers/repository.rb line 25)
[Mon, 09 Jan 2012 13:50:50 +0000] INFO: execute[install-key 2940ABA983EF826A] sh(apt-key adv --keyserver pgpkeys.mit.edu --recv 2940ABA983EF826A)
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d//opscode-keyring.gpg --keyserver pgpkeys.mit.edu --recv 2940ABA983EF826A
gpgkeys: key 2940ABA983EF826A not found on keyserver
[Mon, 09 Jan 2012 13:50:50 +0000] ERROR: execute[install-key 2940ABA983EF826A] (/var/chef/cookbooks/apt/providers/repository.rb line 25) has had an error
[Mon, 09 Jan 2012 13:50:50 +0000] ERROR: apt_repository[opscode] (gecode::default line 33) has had an error
[Mon, 09 Jan 2012 13:50:50 +0000] ERROR: apt_repository[opscode] (/var/chef/cookbooks/gecode/recipes/default.rb:33:in `from_file') had an error:
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I´m not in touch with gpg keys so my question: could be I made a mistake on installing basic system ? 

thanks a lot 
Till