Joe Belfiore from MS, has been tweeting about many issues fixes and upcoming stuff about Windows Phone on his Twitter account. In one of his tweets, he confirms MS identifying and working on “Live Tiles not updating” issue post WP7.8 update.
Another tweet is about improvement coming in future updates for “other storage” issue. He also has given a workaround of “turning off skydrive auto-upload of photos”.
In one more tweet, he has informed about Skype integration in people hub coming back and it will be done through a “Skype” update in probably near-future.
Good to see someone from MS’s side listening to the end users and responding promptly !!