Process "mdworker" Writes to Disk Every 10 Seconds

I noticed disk activity occurring every 10 seconds while my computer was idle. In Activity Monitor I could see this writing going on and at the same time the process "mdworker" would tick up just a little bit of processor activity. A Restart didn't help. The following is what I did to make it stop. I've seen many posts on here with a similar problem so maybe this info will be helpful to someone.

I brought up a Terminal window and entered the following command:

sudo fs_usage -w -f filesys

That will show youa continuous list of all processes that are reading/writing to disk (use Control-c to make it stop). I found mdworker doing a fair amount of disk activity every 10 seconds. But the important thing is that it was the identical activity every 10 seconds, and the common thing in almost every entry was "Default Folder X". So I concluded that it was having trouble indexing something about Default Folder's data. (mdworker is used to index your data via Spotlight.) After uninstalling and reinstalling Default Folder, the constant writing stopped and has yet to happen again.

If you're having a problem similar to this you may find this method of identifying the culprit and fixing it useful.