AFAIK .mac slideshows have nothing to do with iWeb slideshows. iWeb services should run!
Not necessarily so. In changing over to the MobilMe servers the way the new servers handle javascript has obviously been changed somehow. The current iWeb slidesshows rely entirely on javascript and that is driven by server side code.
Older slideshows don't rely on java like current iWeb slideshow do and are unaffected. Homepage site slideshows run just as good as the day they were created.
In all browsers I get
fine line outlines for all photo frames in a photo page. I can get those lines to disappear by recreating the page with an earlier version of iWeb 2 that does not have the Firefox 3 fix. But then FF3 won't be able to view the page. But that does not correct the blank slideshow window.
We'll just have to report the issue to Apple and look for either a iWeb update or some other type of update.
OT