YES! DEFINITELY!
Especially when removing or editing a post. The PM system is even slower. Categorizing the books with an up to 30 second (or more) delay between the pages loading is really aggravating. Especially when you have to go through that "are you sure this is where you want to put this?" page too. Pretty much any place you have to hit the "Submit" button REALLY slows it down. Plus the constant "504" errors! It really slows down the the whole process. And it IS the site, as my computer flies anywhere else on the net. It's like what we were experiencing just before the new servers were brought online.
"We Gladly Feast on Those Who Would Subdue Us." - Addams Family