A's are a pain in the A!!!

[brands online 10]

I know this has been mentioned many many times before, but the weird A's on listings still pop up ever so often. I also know charsets have been given as the problem, but I think the gremlins run a little deeper than that. Every week I need to individually run through all my listings to ensure there aren't any A's and despite that, if I happen to copy my "checked" listings over the next week, then intermittently and randomly a couple of my auctions pop up with A's where they hadn't done so before.

 

Does ANYONE have a proper clue as to the cause? And no, it's not just 'charsets'. Thanks, in advance...