If Current Site has a list with the same name as the list to be aggregated from subsites, qListView / qChartView renders the content from the curent site twice (each row in the list is duplicated). This happens even if Current Site list is not included in Viewed Lists. If Current Site does not contain a list with the same name, then there are no results to display. It seems data is not retrieved from the correct site using relative urls (e.g. ./subsite1, ./subsite2).
Title
Aggregate list data from subsites do not work with relative URL in qListView & qChartViewDescription
Cause
This is product defect for both SharePoint 2007 & SharePoint 2010. Defect Logged
Resolution
WORKAROUND:
Use absolute URL for the aggregate data.
STATUS:
Waiting to fix in the future release of Quest WebParts for SharePoint
Defect ID
This is product defect for both SharePoint 2007 & SharePoint 2010. Defect Logged