Forum:Time delay for templates to update

I have noticed on Gearspedia that templates no longer instantly update when something is changed. For example, Template:Gears of War series is changed, but all the pages that included that template do not show the changes for several hours. Refreshing my browsers cachge does not change this. Removing the template from a page and then re-adding it (in two edits) causes the template to display the changes. Can anybody shed light on this, and is this happening on any other wikis? --EightyOne (talk) 12:34, 1 June 2009 (UTC)