klark0 - 7:36 pm on Nov 6, 2012 (gmt 0)
Yep, one of my sites lost the mega sitelinks for "domain.com". Exactly as you described, I now have mini-sitelinks for the homepage as the first result, followed by two internal pages as #2 and #3 ..then facebook, google+, twitter, pinterest, youtube.
They might be changing that 7 vs 10 results thing. That seems to be a factor.