I just took a look at the Recent Badges column and the high frequency of occurrence of a username caught my attention:
I then visit the links of these badges to see how this user (jrharshath) earn all these badges at once. It turns out that these questions are quite old and he should have earned them a long time ago.
Famous Question: http://stackoverflow.com/badges/28/famous-question?userid=2119053
Notable Question: http://stackoverflow.com/badges/27/notable-question?userid=2119053
Why did he earn all these badges at the same time?