This blog wrote that Indian Internet service providers (ISPs) decided to block popular blog services like blogspot.com. The reasons are not yet clear but many speculate it was related to the Mumbai bombings.
Discussions on this Google list will give you a feel of what’s happening in India right now. It also provides useful links to other online resources, including a wiki on the ban itself.
Some groups are now calling this latest incident a case of censorship. Read this wiki to understand what the Indian bloggers are saying. It includes an alleged list of ISPs banning the popular blog services.