Backitup keeps pending

What can I do to speed up and complete the process.
The backup keeps displaying pending…. It does nothing after this. I’ve been waiting for 45minutes now

Status

Checking prerequisites: Pending
Backing-up /wp-content/: Pending
Backing-up database: Pending
Creating backup directory: Pending
Zipping backup directory: Pending
Cleaning up: Pending

http://wordpress.org/plugins/wp-backitup/