Below is an answer to to your support question regarding "Can't post comments to friends' posts who have free accounts" (
http://www.livejournal.com/support/see_request.bml?id=1795518&auth=fj43).
Thank you for your inquiry. This is a known issue with commenting to Basic accounts -- it should be fixed in a patch release tomorrow. I'm sorry for the inconvenience it causes you until it is resolved.