Over the course of the next few hours (and coming days), you'll notice that all Xbox/Windows live/WoW achievement and PSN trophy data on GameSpot has been removed. This will enable the team to rebuild the system, and ensure all of the annoying bugs that you've been reporting over the past few months are gone.
For more information, please see Boubou's blog.
Thanks for your feedback on the achievement tracking system, and for your patience while it's rebuilt for the better.
26th July Update
Your 'Now Playing' list summary (that was on the right-hand side of your profile) has also been removed, due to its link with Raptr. This will be revamped during the achievement tracking rebuild. Your full Now Playing list is still available under your Game Lists as normal.