I use the default permalinks:
I deleted some posts , when trying to remove them from google through Google Webmaster Tools i got a DENIED message because mr. google needs 404 error to remove it.
The problem , when i change the numbers 123 to 23542352315 i don't get any 404 message but get "NOT FOUND" by my theme.
I have a 404.php file and it works in my blog fine in other sections but with these default links it did not !
I can't change my permalinks because i have 700 posts and it will ruin my blog.
Hope to find a solution because i must delete some post from google ASAP.