Jetpac Publicize not publicizing

Hi guys

I am having a problem with Publicize and I am not sure if it is the same one that lots of others are complaining about or not so here is what is happening on my site. Please let me know if it is the same or what I need to do to try to fix it.

I only recently (some time in May) installed and configured Jetpack. I then posted an article on my site and Jetpack publicized it to facebook, twitter and linked in. Then there was the most recent update to Jetpack 2.3.1 and now when I post to my blog nothing is publicized to either of the social media platforms.

I have been reading this support thread and searching for an answer but not been able to get either working. I did find there is a conflict with Better WP Security which I have installed. However the problem seems to be when Better WP Security blocks access to the XML-RPC.
Now there are three things to note with this:

Firstly, Better WP Security was installed and configured to block access to XML-RPC before I installed Jetpack and despite this Jetpack publicized to facebook, twitter and linked in the first time.

Secondly, the problem of not publicizing did not start until after the last update.

Thirdly, Better WP Security recognises that blocking access to XML-RPC could cause conflicts with other plugins and gives you the choice to block or unblock it. Since I have been having this problem I have unblocked this feature but am still unable to publicize posts.

With all of that in mind:

Do you think my not being able to publicize is related to the problem so many others are having or is it something else?

http://ww.wp.xz.cn/extend/plugins/jetpack/