melanie bund on "Site pages blank aprt from homepage, weird source code"

Hi i had a wp site up and running fine then i uploaded Simple Trackback Validation with Topsy Blocker, deactivated and deleted after it seemed to cause problems, now i have a homepage but all others are blank
homepage
http://www.leobund.com/leobund/
contact page - blank
http://www.leobund.com/leobund/contact/
the source code is completely strange - to do with sedoparking.com and
<meta content="NOW" name="expires">??

Can anyone help?
Melanie