The Google +1 buttons I added to each of my posts sometimes disappear from my blog along with the Google+ badge on the sidebar. When they are there, both are there, when they are disappearing, both are gone.
Basically what I do is to browse on the blog, enter into blog posts, go back to the main page, scroll down to the bottom, click 'Older Posts', keep clicking 'Older Posts'... etc, sooner or later the Google +1 buttons and the badge disappears and will not appear again.
I realised that if I clean cache and cookies, it resolves the issue, so it must have something to do with caching, I just can't figure out what it is.
I'm using and Max OS X 10.7.3 and Google Chrome 18.0, but I tested it in other browsers too (Firedox 11.0 and Safari 5.1.5), same situation. My blog is webeno blogspot com