Courtesy of charlie at babeskidoodle.com
$amazon = amazon_search('KeywordSearch', $node, $mode, 'lite', '');
Of course the last parameter is the page you want. this get's passed to
the xml call as a blank parameter and some times amazon can handle it and sometimes it can't. Tonight for example it's not handling it well.
I changed it to be:
$amazon = amazon_search('KeywordSearch', $node, $mode, 'lite', '1');