Search Builder incorrectly returning no entries.

Note pre-upgrade smartgroups are affected

Steps to replicate on Sandbox
http://sandbox.civicrm.org/civicrm/contact/search/builder&reset=1
fill in : contribution / receive date / => 20081109

No matches found for: Receive Date >= "20081119"

SELECT DISTINCT(contact_a.id) as contact_id, contact_a.contact_type as `contact_type`, contact_a.contact_sub_type as `contact_sub_type`, contact_a.sort_name as `sort_name`, civicrm_contribution.id as contribution_id, civicrm_contribution.receive_date as `receive_date` FROM civicrm_contact contact_a LEFT JOIN civicrm_contribution ON civicrm_contribution.contact_id = contact_a.id WHERE ( ( LOWER(civicrm_contribution.receive_date) >= 20091119 AND civicrm_contribution.is_test = 0 ) ) AND ( 1 ) ORDER BY contact_a.sort_name asc

Is the query run & it returns no results in sql either

but if I add ' around the date it does work:
SELECT DISTINCT (contact_a.id) AS contact_id, contact_a.contact_type AS `contact_type` , contact_a.contact_sub_type AS `contact_sub_type` , contact_a.sort_name AS `sort_name` , civicrm_contribution.id AS contribution_id, civicrm_contribution.receive_date AS `receive_date`
FROM civicrm_contact contact_a
LEFT JOIN civicrm_contribution ON civicrm_contribution.contact_id = contact_a.id
WHERE ((LOWER( civicrm_contribution.receive_date ) >= '20091119'
AND civicrm_contribution.is_test =0))
AND ( 1 )
ORDER BY contact_a.sort_name ASC