My pet peeve is about renaming my photos.
I download my photos from my digital camera into my laptop (I bring my laptop to every shop). When I download, I click, cut and paste into the file for that shop on my laptop. Then, I click on the "rename" link to id each photo. Unfortunately, right below that link is the "delete" link.
I am not a person who uses foul language, but, often there is some that emanates from my vehicle when I hit the wrong link.