Hi All,
I installed Artio SEF component and faced a minor issue with the author link under mamblog. It lead to a 404 page. Fix for it is
1 . Open this file - ROOT/components/com_mamblog/sef_ext.php
2 . Go to line 78 - you wil find this - $sefstring .= "$action/$user/";
3. Replace it with this - $sefstring .= "$action/$id/$user/";

$id seemed to be missing. I hope Artio team will include this in future release.
I would like to thank the Artio team for this excellent plugin.