I bought an Retina iPad Mini a week ago and I found that Safari crashes multiple times a day during use (e.g. on twitter's webpage) among other apps. Also, when I open a few tabs in Safari (say six), it reloads the page each and every time I go away from it. Is this normal or am I expecting to much? It's running the newest software @ 7.0.4 I also have 7 days to make an exchange/return. Thank you!