CherylMcL on "[Plugin: Jetpack by WordPress.com] Jetpack slows down the site. big server load"

Hi there,
Our site has become quite slow and while troubleshooting, deactivating all plugins and activating them one by one and testing the speed, jetpack is the one that's slowing down the site significantly. I've noticed others complaining about the same issue and the increased server load. Is there a solution? Is there something that needs to be optimized with the plugin? We'd love to continue using it but cannot if this slowness continues, unfortunately.

http://wordpress.org/extend/plugins/jetpack/