March 18th, 2008 | Published in Google Orkut
Issue 103 describes a problem in orkut's makeRequest implementation that keeps POST data parameters from being included when generating the signature for signed requests. We have a fix for this that will be pushed to sandbox.orkut.com soon.
If you're verifying signed POST requests on your server, make sure that you include the POST body parameters when building your Signature Base String. The code at http://code.google.com/p
Please see issue 103 for more details.