I went thru several N7's (screen lift) before I got a good one.
I was also having problems with the pull down menu in 4.2 until I realized that the pull down menu is now in the upper right corner of the screen instead of the middle top.
Sorry to hear. Glad you finally got a good one. Defects are always unfortunate and frustrating to deal with.
Regarding the notification pull down, I'm referring to this exchange:
Even on a tablet sized screen (Nexus 7 in my case) I have to swipe 4/5 times to get one of those single bars to swipe away because they are too narrow for this action to be practical.
The notifications are narrow? It's a solid bar of information.
I don't know, mate. I don't have trouble swiping notifications away... at all. I've never heard anyone missing it or struggling because it's too narrow. Practice some more?
EDIT: How does one have troubling swiping away bars this big? Not trying to demean in anyway. Serious question. It shouldn't be difficult.
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Really don't know how those notifications are too narrow to swipe away.