Yes, I've had a couple where the update just stopped.
I tried the "local archive" or "local directory" (under expert mode in the 1-click upgrade mod, for the local directory you need to copy the files to /admin/autoupgrade/latest).
Just to make sure I also set the theme to classic - then switched back after the update.
Everything worked fine with the local upgrade options.
Just make sure you have a backup to redo any customisation.
-- I didn't want to just overwrite the old files, I wanted a "correct" update, so just copying wasn't an option.