[jQuery] remove() method IE 7 ERROR

[snakebit]

Hi,

I have an ajax request which is returning an xml, but when I tray to
remove an element from the xml response I'm receiving the following
error message:

This is happening only in IE7 (I didn't tray in IE6)
Line: 1283
EROOR: "Object doesn't support this property or method"

This is my code:
var pDialog = $(data_responce).find('PDialog');
if(pDialog ){
pDialog .remove();
}

This is what I find in 1283 when i debugged it :
// Compute a unique ID for the element
                if ( !id )
                        id = elem[ expando ] = ++uuid;

                // Only generate the data cache if we're
                // trying to access or manipulate it
                if ( name && !jQuery.cache[ id ] )
                        jQuery.cache[ id ] = {};