i've put the randomimage extension on my mediawiki,
http://meta.wikimedia.org/wiki/RandomImage, and it works very nice.
however, in the documentation says
The image will change when the parser cache is
expired, either automatically or by purging the page, allowing for rotation
of content.
As the developer says, I get a random image, but it doesn't change
when i refresh the page, because it depends on the 'parser cache'.
my question is
when does the parser cache expire?
how can i purge the page?
any idea?
thanks in advance!!!