For some reason every time I update Jetpack on one of my sites, the upgrade hangs and never completes leaving the .maintenance message that I need to remove.
I have a number of WordPress sites on the same server and they always update fine, but for some reason on this site it always hangs. on the upgrade. I have tried uninstalling the plugin and then deleting the files and installing again - this gets the latest version working fine, but the same issue arises whenever a new version comes out.
Any pointers would be greatly appreciated!