Hello stretto. Welcome to Sevenforums
I am not entirely sure what your question is, as you seem to have installed cubicexplorer to replace windows explorer and it sounds like it is working for you.
Note that whenever you install and use customizations outside of the windows environment, and/or if you have a weaker or slower computer, windows may not respond as quickly or correctly as it should.
My guess is you are attempting to get windows back to normal. But using customizations can and in some cases does hinder performance. I would suggest putting your computer back to normal, and then I can attempt to help you get it up to speed.
If you would like, click the link to follow this tutorial for Optimizing Windows 7 on your computer:
http://www.sevenforums.com/tutorials...ndows-7-a.html