For the past few months my site has seen a surge in visitor count. As a result, monthly quota of bandwidth limit got exhausted on 24th this month. Which is why site was down for the past 3 days or so.
This happened in April too when my site was down for the last four days for the same reason
154814 page views in April and 173064 this month (till now). It was high time I added some extra bandwidth. Last night I did this crucial bit – bought more bandwidth. Now I have a 33 GB monthly bandwidth limit as against 3 GB that I had before.