I have many photos taken that I no longer need/want. I have deleted from the harddrive but they are still showing in the PSE 9 organizer. This is really slowing the PSE down as it tries to find these photos and cannot. The thumbnails are still visible in the organizer. what to do?
Use the 'reconnect missing files' feature in the File menu of the organizer.
When you are prompted how many files are not connected, choose select all, then delete all.
The thumbnails are kept in the catalog, they are still there even if you delete the files from the explorer/finder.
If you don't want the Organizer to search automatically for missing files, disable that option in the edit/preference menu, file section.
Why can't OP right click on the thumbnail, and select "delete from catalog"??