Search function seems to have regressed to only very recent threads. Played around with exact thread titles and it's showing Nada on posts/threads even from last week.
That's probably related to John reloading the dB, but not reindexing it.
https://members.vbulletin.com/docs/html/search_type
If you start with an empty dB, like when you start a website, the table(s) are built as you use it, but when reload a large dB, you have to manually initiate an indexing.
http://www.vbulletin.com/forum/show...ching-post-and-threads-made-after-the-upgrade