My iPad 2 - 32 gig model only has just over one screen of apps. Apart from those apps there is nothing else loaded on that machine. Mine is now showing 21 gig. Safari is now a right dogs dinner and battery life seems to have got worse. I really wish I had stayed with iOS 7.
This week has really shaken my faith in Apple.
Try 8.0.2 on your iPad 2 and report back. I have a friend with an iPad 2 that installed 8.0 and she said it wasn't working too well. If 8.0.2 doesn't do the trick I suggest you go back to 7.1.x while Apple is still signing that release.
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Has anyone had any luck with Mirroring your iDevice running 8.0 or 8.0.2 to your Apple TV? I have a 3rd Gen Apple TV running the lastest software and both my iPhone 6 Plus and 5s are running 8.0.2 but I can't get mirroring to work to my Apple TV as I did with 7.1.2. When I select mirroring from the control panel the screen appears briefly on my Apple TV and then goes away.