the leaderboards don't seem to be working at all atm. I have the same issue. They didnt work for the first couple weeks after launch, but they have been fine of late til about 2 days ago
Yeahh its suddenly down and Empty, but well the Stats are corrupted anyway, or do i really have played 33753 Hours, thats over 3 Years?!?! Dunno how a such thing is possible else that everything is just corrupted, not even the Playtime is correct, tz tz tz....