Meteor slideshow FIREFOX Problems

Hello, I’ ve a problem with version 3.5
I can’t see the slide in firefox. I can show that here: http://www.rugbyrovato.it/

What is depend on?

I can report on any plugins currently installed :
Activate:
Breadcrumb NavXt – Contact form 7 – menubar – wordpressimporter -Wp table reloaded
Deactivate:
Akismet – Dinamic content gallery – hello dolly – pluginchief twitter badge widget – promotion slider – ultimate TyniMCE

I would like to know causes it, should be possibile conflicts between different plugins?
Or, What do you think is? I also thought that it depend of upgrade.
Could fix it, with a line of code?
We will apprecciate if you would like to supply us the solution

Thank’s in advance

http://wordpress.org/extend/plugins/meteor-slides/