Strange - user location not being tracked

[BenSkiddle]

Hi
I am trying to add my non-vB pages to the whos-online, which shoud be simple.
I've included global.php with the required chdir() commands at the top of the page, and this IS working because if I dump $vbulletin it includes:

PHP Code:

[vars] => Array
                                (
                                    [sessionhash] => 
                                    [userid] => 142
                                    [host] => 80.193.200.233
                                    [useragent] => Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8) Gecko/20051107 Firefox/1.5
                                    [lastactivity] => 1140872756
                                    [styleid] => 0
                                    [location] => /whatson/guide.php/London/Canvas/Radio_Soulwax_presents__NITE_VERSIONS_WAREHOUSE_PARTY/44870/
                                    [althash] => 
                                    [badlocation] => 0
                                    [inforum] => 0
                                    [inthread] => 0
                                    [incalendar] => 0
                                    [loggedin] => 0
                                    [idhash] => 31c0773f39b883650d51447edd333644
                                    [bypass] => 0
                                    [languageid] => 0 


See the location variable? all good

But when I look in the vb3_session table, nothing is there. If I filter by the userid it just shows the previous forum location that I visited over 30 mins ago, and not this location.
Any ideas why it would not be putting it into the DB (and hence not in the Whos Online page?)

Thanks
Ben