Ok. I know there are other posts about uninstalling Thunderbird, but my problem is weird. First when try and find Thunderbird in the Software Center to uninstall it it does not show up as installed, but only in the list of available to install. YET I do have it and MANY other Thunderbird files and folders when I do a search in the File System:
Ok, so I did the old "sudo apt-get remove --purge thunderbird -y" and I got this back:
It looks to me that it DIDN'T remove Thunderbird etc. and when I searched "File System" I got the same result as above!
My question is, why is this weirdness happening, and can I manually grab all of those "Thunderbird" Files and Folders and manually trash them safely? Are there any "Thunderbird" files that might cause problems in any way if I trash them?
Ok, I tried using gksu nautilus and got an error message:
What does this mean? Be kind, I'm a novice!
Ok, I tried gksu nautilus again and got this warning: