Post in which way the html links are there ? ( like /category/threadid.html ?etc....)
and also disable vBSEO ..and check your .htaccess ..and make sure that it matches with the one which comes with vBSEO..
Hope it helps

btw wrong section ..!
desiboy Reviewed by desiboy on . help in vBulletin hi all.... i got a little problem in vbulletin there is a forum which has html urls but they r all dead(that means all the 17,854 threads) how to convert back to displaying the gud ol' site normally Rating: 5