mirroring does not work

Hello,

I recently upgraded to gallery 1.5.3, and the mirroring functionnality (which was working with an old version of gallery) does not work know.

in the config page, I wrote http://www.secondsite.com/albums as documented, I copied the content of the albums folder to the second site, but all images are still loaded from the first site.

The doc says that if the album is not up-to-date, it will load the local site, otherwise load the mirror site. On what it is based to say it is up-to-date. Which file is checked?

Thank you for your help,

Sam