by jimbobo2779 » Tue Jul 16, 2013 9:08 am
The links aren't gone, they just aren't saved as being verified/confirmed links in NHSEO. You can re-check all posts and the links should be found again, though whether this is worth the time it will take is up to you. Personally I very rarely do a link check unless it is for testing something as there is just little point to it.
As for PG I have no idea why it could be doing that, you could try asking their support. When I have used it in the past I always set the interval at 0 and don't remember having that problem.