I'm using an iPhone and clicking on things on a page is sometimes borken in weird ways. For example, the link to this meta site actually linked to http://superuser.com/ for me just now. Clicking on questions often takes me to a different question, a tag, or a user's profile page, often apparently links which were near the one I actually clicked on. Similarly, when viewing a question, clicking on a link sometimes takes me to an adjacent link. But every time I decide I want to report this, the symptom disappears.
I have seen it maybe half a dozen times in the last couple of months, only ever on my iPhone, where I use http://grazingbrowser.com/ and only ever on Unix & Linux, never on Stack Overflow which I visit a lot more often.
Here is a screenshot from this very page where I have clicked open my "supercollider" inbox and held down my finger on the comment on a Procmail question I receved today. There is no way I could have misclicked this large target seven-eight times in a row, enough to persuade my phone to let me finally get a representative screen shot with all the pertinent details included after several attempts. The phone displays options for the link I clicked; you'll notice that the URL is for a chat comment, corresponding to the next entry in the inbox menu.