Error pages don't show

[lrflew]

after doing some research on wordpress.org, I saw that a 404 message should link to /index.php?error=404, but it only shows the index page without the error message.

[dd32]

Depending on the theme, The 404 case may not be handled.

Also, 404 doesnt redirect to index.php?error=404.

The 404 case and proper headers are being handled right for me under current trunk.

re-open if you have any specific case where its not working, under the default theme and no plugins.