Dunno what this is about, so here's the link, it also has a pic of Charlie Sheene, so its not all useless :)
http://www.eurogamer.net/articles/2012-11-30-pc-far-cry-3-problems-negated-by-setting-uplay-to-offline?utm_source=eurogamer&utm_medium=email&utm_campaign=net-daily (http://www.eurogamer.net/articles/2012-11-30-pc-far-cry-3-problems-negated-by-setting-uplay-to-offline?utm_source=eurogamer&utm_medium=email&utm_campaign=net-daily)
Doesn't sound too serious, but it does herald the beginning of the likely long lineup of patches.
It's a lottery. I haven't experienced any problem while others have not even been able to redeem the extra stuff they paid for when purchasing the Deluxe version.