This is not a bug, this is intentional tweaking. Let me explain.
Thanks for the explanation, but me really, really no like!!
That human rights forum, for example, that I just linked in, with 11 threads I already put in - it wouldnt exist with just 5 tags per thread. Cause whether it's state terror in Chechnya or torture in Guantanamo or political prisoners in Tbet, you'd first add the name of the countries involved (Chechnya+Russia; China+Tibet); the name of the continent, as well as "International news" (to keep the old forums running as basic categories, which in this case are actual useful ones) -- that's four already, not mentioning, say, extremism, terrorism, fundamentalism, history, "former soviet union", communism or the name of the famous person in the story (Basayev, Dalai Lama, whoever)...
I mean if one of the biggest advantages of tagging is the many ways in which you can find a relevant item back depending on your "entry point" of interest, then a 5-tag limit is ... a serious limit. At least if I look at the threads I've been tagging. At least as long as not too many people are doing too much tagging..
Maybe if 10 is too much, can it please be somewhere between 6-8? So that you can add more than the countries, continent and main thematic forum involved? Please, please, please?
I promise I'll tag 100 extra threads if you do...
*looks sweetly innocent and pleading*