Auction House and Rep bar issues

[Belgarius]

For some weird reason, unless I disable nUI now, I am more often than not, unable to use the auction house. Instead of listing items, it simply spends countless minutes "Searching for items". Once I disable nUI in my addons, it works as it always has. Only noticed this since 4.1 dropped. I have systematically disabled all my other addons, and only nUI seems to be the culprit here.

I've also noticed that the rep bar is reverting to Guild, and showing 0/3000 of neutral. If I gain faction with someone, it does change for a time to reflect the gain, but reverts back to Guild 0 shortly thereafter. On the character I noted this on, the reputation is at Honored, so...

Any ideas would be gratefully accepted, and this pertains to the .19 release of 5, plus version.