Well, I've finally had some time to look at accessibility issues in 3.8. The sites in question are using Weaver II--1 uses the free version, the other uses Pro. I haven't tested w/default themes, but I will. When attempting to activate a link, e.g., the 'Pages' link in the admin dashboard using the latest version of NVDA, I'm instead put back on my desktop. I'm running the latest version of Firefox, & I note this does not happen w/IE. Nor does it happen w/Jaws. So--something changed/broke w/that particular combination between 3.71 & 3.8. Wah!--it's my favorite. I'm going to raise this issue w/NVDA developers as well, but, when it comes to testing web accessibility, NVDA is likely the gold standard, simply because it tends to bring out problems fairly dramatically. So, it might be something that we as members of the accessibility team wish to examine in greater detail.
Let me know how I might assist, ok?