A month ago there was change in the Plus One button load speed it was claimed to be made 20 percent faster.
This news was released in the Google+ Platform Preview Group by an email. The mail says:
We’re turning on this change for the preview group to give you anopportunity to test the changes on your web site and ensure the +1button functions properly. This change applies to all browsers in allenvironments.
If you do notice any changes to the +1 button while viewing your pageswhile logged into your preview account, please let us know in theGoogle+ Developers Forum:https://groups.google.com/
To help us quickly troubleshoot these issues, please create a newthread on the forum with the following information:- A link to a page with your issue.- Your web browser and operating system. Make sure to include theversions of both.- A short description of the issue you're seeing.- Whether you can reproduce the issue while you're logged in with yourpreview account.
Thanks for your feedback!
+The Google+ Platform team