I appreciate you bringing this to our attention, and I assure you that there is nothing to worry about. This is an erroneous message generated by McAfee's phishing filter. We have received a couple reports of this problem and will be taking it up with McAfee in the near future.
The report on http://www.auctiva.com on the Site Advisor website actually states "We tested this site and didn't find any significant problems." To view the complete report, please click the following link: http://www.siteadvisor.com/sites/auctiva.com