It was only last week I was arguing with people about using crappy autoblog systems. I would give up on your site. Its doomed now.
but I also never experienced that before. I have not experienced the error. just fit into my webs .... there are people who are using <<<what it could be justified
I got sand box as well. i woke up one day and my page one ranking was gone. i check to see what could have caused it and i found out that after i had changed my navigation bar some of the links on the page was broken.
i just filed a reconsideration request, I know it prolly useless . but i guess i will take it like a lottery ticket.
But I don't think putting feeds can cause you banned. As I have 35 Blogs with autoblogging with rss feed but they have not penalized ever. And if it is true then it is very scary thing for me as well.