I didn't know where to put this topic.
Today I decided to do some /home house cleaning in order to prepare to save folders to my external drive.
I knew I had a lot in my Trash and did delete much of the stuff there. I did not delete in one big delete as I often like to relook before deleting. I left a bunch of folders there for a later look.
I then went to /home and started to move a file and got a notice that /home was full.
I save things but I don't think I save that much and I even put folders that are not active in a Storage partition.
Here is what I saw. When I first tried to save the picture, it said the disk was full, so I saved in the Storage partition.

I rebooted thinking something was amiss.
This time when I saved the picture I could save in /home.
Here is what I saw. But there is not much difference.

After rebooting a notice came up from DropBox saying DB cannot sync unless you free some diskspace on your computer.
I just got rid of tons from the Trash. Is there something else I can check....before you tell me to get rid of some of my junk? I don't want to just start moving things until I am sure of what I am doing.
Using KDE Dolphin