... The mess started on the 27th of February when the Pakistan Telecommunication Authority issued instructions to all ISP to block all websites displaying the controversial cartoon images of Prophet Muhammad.

Hence from the 28th of February the regulatory body barred access to a number of sites and it sadly included a few domains being hosted on the blogspot domains, rather then blocking the select few websites it seems they placed a universal block on all Blogspot.com sub-domains causing a number of bloggers to be banned from their own site for no apparent reason whatsoever...
Blogspot Censored in Pakistan.