Have you ever had a lot disappear from the gallery?

I started with again with an empty world and was placing all my saved houses and families. I discovered one house was missing from my library. I must have deleted it at some point for some reason I can't fathom. Anyway, no biggie, I knew it was in the gallery. Or it was... it's no longer there. All of my other builds are there, but not that one. I did a search to look at other people's builds because I was considering using one of those to start with rather than starting over from scratch. As if to rub salt in the wound, I found my build in someone else's catalogue without the "original by" tag. I know some people might think it's nuts because it's a Sims 2 house and they are all going to look similar, but I know this is my build. I'm not going to bother the other person, we all know this is a risk when you upload things and clearly they made enough changes to get the "original by" tag to go away. I've decided to just start again from scratch and make a few changes. I'm just so aggravated. Has anyone else had this happen?