So we upgraded Jetpack before the weekend (and the subsequent 3.4.1 release) and thought all was well until AutoOptimize almost ran out of disk space, having generated 8GB of JS files.
Comparing the files, only one thing appears to differ, code which references WordPress stats. AutoOptimize appears to be pulling in the content of //stats.wp.com/e-201513.js which contains an incrementing value.
I would ideally like to exclude this file and have tried adding e-201513.js, stats.wp.com/e-201513.js and http//stats.wp.com/e-201513.js to the advanced options for javascript to no avail.
Any idea what the correct syntax might be? Reading the blog post it suggests the above should be enough.