I stopped paying attention to reviews a long time ago, I watch them simply to see the phone itself and the interface. I have the P6 and have no issue at all with any of the "problems" you mention.
When problems are mentioned with a phone they are usually very isolated or perhaps encountered because of a pre production unit. Also some people just like to complain and will find fault with anything, some people also complain about certain things because they just don't fully understand the operation of the thing they are complaining about.
Essentially I love my P6, have no problems at all. The phone is a total looker and lots of people have played around with it and have been very impressed.
My 2 cents
Plus the themes are absolutely amazing !!