@Frank Apisa,
I'm pretty sure that there never was an a2k spellchecker. That was always your browser's function. So? Maybe you need to get a new browser or update the one you have.
On the other hand? You might have noticed something amiss and others have noticed it here and elsewhere online. Browser spellcheckers - and even if you're trying to verify a spelling via a Google search? They're getting worse and worse and way less helpful.