I've been making little changes to my sidebar--moving things around, adding text, etc. I've been modifying the sidebar.php file via the WP interface. But I just checked my site (in progress), and the sidebar seems to have reverted to its original state, before I made all the changes. Does anyone know why this might have happened? I did add some Sitemeter code to my sidebar around the time that this problem occurred, but I can't tell if the two things are related.
I didn't save the modified file to my own computer, unfortunately. I guess I shouldn't get used to modifying files through the WP site without backing them up locally.