Topic: Simpleviewer slow in Firefox, quick in IE

I have a simpleviewer gallery, with the most recent simpleviewer version, generated with Picasa.

The view works on all browsers, but is very slowly only in Firefox. In IE7, it is quite fast, in Opera it is OK, but in Firefox it sucks. The images load stuttering, and there is no smoothness. I believe this was different with earlier version of Firefox. I am currently using

Is there anything I can do?