Looks like Infinology, own current (for little time) hosting provider for Pricenoia is dead... not the server, but the COMPANY!! Amazing..
Well, until we solve the issue and migrate to a new server (probably on Amazon EC2) please be patient. Once in the new server, there won't be more issues of this kind.
As an extra, we'd like to announce that we are planning a new upgraded version of Pricenoia, developed on RoR. We'll keep informing from this blog!
Thank you for your support!