04ac3695_se_Notes___Amazon_Web_Services__Issue
[Description] This parameter sometimes does not return results for the specified pubdate value when it should. [Impact] Do not use ItemSearch power searches that use pubdate. [Issue] 
The parameter, pubdate, which is used in ItemSearch Power searches is not working correctly.
Release: Amazon E-Commerce Service on 2007-07-23 : Release Notes : Amazon Web Services