I want to further explain a reproducible problem.
If I'm in the Mobile forum (any forum actually), and there are three postings. I look at posting A, then posting B, then posting C, but come up with an comment for posting A or B. Whether I use the back button, or the links at the bottom of the page to navigate back to the previous post, and I post an answer, when I click the post button, the answer goes to the correct post. However, instead of going back to the same post, the server takes me to the last post I looked at, in this case C.
I thought this was a problem with Safari, but it also does it with Firefox. I can reproduce it on my PC as well using any browser, so it isn't Mac related either.
It is really no problem except the system is SOOOOOO slow, it takes several minutes sometimes to get back were you started from.