Unable to Re-install mountain Lion after erasing with disk utility! help

I bought my new Macbook pro retina disply 13 inch last friday. played with it some time and try to restore using a time machine back up of my old Mac Air. It worked well but I didn't like it so I restarted and pressed Command + R to bring the restore utility and from there I used the Disk utility to erase my Disk and then after connecting to net I clicked reinstall Lion. First my machine was verified by Apple, then I entered my apple ID, then the mountain lion licence agreement came and i clicked agree and it started installing. Immediatley below the installation bar it showed 50 hrs remaining to finish installation. it was odd because I used to finish it within 2 hrs. Moreover the time appeared to increase from 50 to 51 and more. I waited all day without any use. it looked as if the disk has some write protection, the software is trying to install but unable to write.

What can i do now? I am now without a OS in my mac.