No, there's nothing wrong with your Un'Goro packs.

Blizzard has put out a statement regarding the supposed Journey to Un'Goro pack problems. Members of the community are claiming that they're getting too many duplicates, but Blizzard says that's not the case.

“We have seen a number of posts from our community today regarding Journey to Un'Goro packs and the possibility that they might be distributing an abnormally high amount of duplicate cards. We want to assure everyone that we have looked into this concern and have found that Journey to Un'Goro card distribution is working properly, both at a per card and per rarity basis, and is consistent with previous Hearthstone releases. 

Thank you for bringing this to our attention. We really do appreciate all the feedback, even when related to possible bugs or concerns around the game.”

What was easily one of the most positive set launches in Hearthstone history took a downturn when players started feeling like they were getting too many duplicates. This was amplified when forum threads started being deleted, likely because they were duplicates, but it made players feel like they were being censored or that Blizzard was trying to cover it up.

Hopefully, this statement allows the community to refocus on all of the changes that come with Un'Goro and away from the negativity that had overtaken most social media channels.