I was writing a blog entry, and every now and then I'd save or preview the page. After a few paragraphs I started getting internal server errors whenever I saved or previewed. After an entire day of pulling my hair out trying to figure it out, I discovered the cause. I had used the word "selection" early in my post, then further down the page I used the word "from". Apparently when I saved or previewed, my server read my entry as the command "select from", which caused an error. I don't know if this is a WordPress issue, or my server. Any ideas?