New release of UD that should be a lot more responsive. I've moved the spinner to page refresh to cut down on the spinner on every thing that changes. For example, mount a disk and the 'Mounting' indicator will come and go without the spinner. Things like remote server on line status is now real time and the page will update if a remote server goes offline or online. The disk spun up/down indicator is also real time and will change with disk spinning status.
The script file running status will now update based on the script running and will update real time. For example, plug in a back up disk and the 'Running' indicator will show up and will go away when the script is completed.
I have a continually mounted disk that I use for daily backups and have a User Scripts script that does a daily backup. You can set the User Scripts script file that is using the UD mounted disk and when it runs, the 'Running' indicator will show on the UD disk. This will give you an indicator when a script is running and keep you from unmounting a disk that has a script running on it.
I'll continue working on getting UD to be more responsive and real time.