80% of my ebay RSS feed-powered affiliate sites are not loading (hosted on hostgator - usually the best for this type of site.)
According to other forums this is universal. If you've been through this before, you will know that it doesn't take more than a day or two for your SERPs to suffer, regardless of how much unique content you've painstakingly put on there.
I don't know of a good solution - the responses from either side have not been helpful (from what I have seen) so the only temporary solution I know of is if it's possible, de-activate the ebay RSS feed powered parts of your site until it is fixed and that way your site will load properly and won't get punished as badly.
For some (me included) all of the EPN sites are also down, so I can't view their board.
Bearing in mind recent EPN events, and considering that hostgator are usually the safest bet and also considering that hostgator's responses on this are that it is out of their hands, ebay is blocking certain IP's of theirs - well, don't leave any tin foil lying around because I am inclined to start wearing it on my head.