Edit posts?!?

For the life of me, i can't seem to edit my past posts here on blogger. i can add, but not edit. have tried it hundreds of times but clicking on the "edit" button doesn't work. dunno if it has something to do with my browser or what. oh well... i guess I'll have to learn to live with my (printed) mistakes. Which is driving the OC (obsessive-compulsive) in me crazy!