I agree with VideoMike... Same situation here...
Meanwhile I am still getting the "errror found" but less times and for just one (on random) of my three sites (which are on same hostgator server)... So no idea why... Jon - is there some aggressive timeout when checking?
I would like however address another problem - which is that even with Jon's new checking procedure, there are still sites in mywaylinks network, that DO NOT SHOW other member links, but somehow pass Jon's testing procedure.
I've found two of those sites (both are PR4), and open a ticket in JUNE, but Amin said he cant do anything, and forwarded the issue to Jon... I just sent Jon a personal message about it (with url of both sites), and I hope it gets resolved.
To me it looks like (presuming that Jon's checking mechanism is not broken in first place), that these sites are using some sort of screening, and they show right page (with links and evertyhing) to some IPs (i presume Jon's checking mechanism uses same IP every time), and no page/error page to all other IPs (including search engines crawlers)...
So my advice to fellow MWL users, is to check whether your incoming links really are live.