All Posts Disappeared?

While making some “cosmetic” changes to my blog.. all the posts have disappeared??

Blog main page returns the old – “Sorry, no posts matched your criteria.”

Manage/Posts Tab in Admin – returns – “No posts found.” – and the search box contains “2c64fdbef1f5852907bb61a0c1c77388”

All post are still in the database

Have I stuffed something I didnt know about, or should I just re-upload the main pages?

D