H:\Projects\Win32-WindowsUpdate\lib>perl test.pl
Adding 09569688-db5d-422b-965d-aac88486fae4 February 2007 CardSpace Update for Windows XP (KB925720) to collection
Adding 60b990a0-6efa-47be-8f5a-7df2c402583e Windows XP Service Pack 3 (KB936929) to collection
Updates to install: 2
$VAR1 = bless( {
                 'Item' => undef,
                 '_NewEnum' => undef,
                 'Count' => 2,
                 'ReadOnly' => 0
               }, 'Win32::OLE' );
$VAR2 = bless( {
                 'ClientApplicationID' => '',
                 'IsForced' => 0,
                 'Priority' => 3,
                 'Updates' => undef
               }, 'Win32::OLE' );
$VAR3 = undef;
$VAR4 = bless( {
                 'ClientApplicationID' => '',
                 'IsForced' => 0,
                 'parentWindow' => undef,
                 'Updates' => undef, ## this is the trouble spot
                 'IsBusy' => 0,
                 'AllowSourcePrompts' => 0,
                 'RebootRequiredBeforeInstallation' => 0,
                 'ForceQuiet' => 1
               }, 'Win32::OLE' );
$VAR5 = undef;