Personaly I never use the 64 bit version of windows explorer.
I found it crashed quiet a lot when using it to browse the web. So I stuck to the 32, bit version that also comes with windows 7 if you look.
Or use Google Chrome if you wish.
My best advice, just ignore it don`t use it unless you have to, or a requirement by your self. The is not much benefit as I could see to using it, and often the case when browsing the net you would come across web pages that simply did not like it, throwing up some error on page loading.