Hi,
I couldnt get the extension to work at all and after much digging I realised that it was ignoring the menu item to which zOOm was published due to the fact I had an older menu item using zOOm which I had deleted.  I changed line 138-ish in sef.rewriter.php:

$query = "SELECT id FROM #__menu WHERE link = 'index.php?option=com_".$component."' AND published = 1";

by adding the published bit.  On this note, shouldn't it be possible to have the item published multiple times in different menus and still have it work?

Also this code seems redundant given the code above it:

 
if (ereg( '&Itemid=([0-9]+)', $url, $matches )) {
        $menu_id = $matches[1];
}



which actually worked in my setup.

Is the extension still an active project btw?

Cheers
Harikaram

Oh my apologies you are correct. 

My download of sef_ext.php was missing like 4 lines off the end though, incl. some curly braces and semicolons.

OpenSEF is dead?  Shame, seems like a good component.