The issue is with the Head-fi forum code, not Safari - I know that sounds like an awfully presumptuous remark but I really think if it was a personal browser issue, we wouldn't be seeing several people experience problems with exactly the same onset time. We also wouldn't be seeing ONLY Head-fi causing browser problems.
The issue (for me) ONLY occurs with Head-fi and ONLY when I enable javascript support. As I also mentioned some days ago, the original onset of the problem coincided with a change in behaviour of Head-fi within the stock Android web-browser, too (repeated sequential page-loads, for each advert tile), and, indeed, there is another thread about some Android users experiencing similar problems on Android browsers. Jude has even acknowledged that the forum software has been updated more than once during this time period, and that an issue was, indeed, known about.