static value caching not working in getImage function

I just turned devel queries on to look for the query being generated at a URL like civicrm/group/search?reset=1&force=1&context=smog&gid=2

& I noticed this query runs 50 times (one per row) to generate the page. Or 100 times if I view 100 rows

SELECT id FROM civicrm_uf_group WHERE ( civicrm_uf_group.name = 'summary_overlay' )

It's the 'getImage' function according to devel - presumably this which would seem to have a static cache in place but?

CRM_Contact_BAO_Contact_Utils::getImage