After using Ubuntu for quite sometime, got a little bored with the new bugs. In particular the new bug that freezes the display in Precise. So I thought about trying out Debian. Yes, the great grandfather of all these species, the Debian. The problem is none of the CD-ROM drives work properly in our lab, so I decided to use the USB boot. It used to work like a charm using unetbootin, however, it gave a lot of trouble for Debian. I found the following 3 pages very useful to prepare the bootable disk: page 1, page 2, page 3. Thanks community support, Debian is good!
To get Debian, one must use the jigdo files if the local repository is available.