OMG... what is eating your eyes out!!!!!

Do you post the pictures as attachments and browse to your computer to add them? that may be the issue.
I post all my photos to photobucket.com and then copy and past the "img" link to the picture. You paste this link in where you type your post rather than as an attachment.
Its an extra step, but worth it. Places like photobucket specialize in hosting pictures online and letting you then post the picture wherever you like.
Give it a try and see if it works for you. Photobucket is free.