[Novices] some web images (like google maps) won't load in Firefox

[Steve Petersen]

Hey computer folks, I wonder if you can help me out with a small, 
strange problem.

There are certain images that just won't load in Firefox on Ubuntu 5 at 
home - images such as map images on Google maps, and small icons in an 
online FCKeditor-like html editor.  I can't imagine what's different 
about those images, and I've made sure those sites are allowed to 
download all images in Firefox, and so on.  They load fine in my FC3 
machine in the office, and in Opera at home.  What could be going on?

Also, I've noticed on occasion that Firefox will suddenly start taking 
lots of CPU work just to switch tabs, open menu items, and so on.  Any 
guesses why that might be?

Thanks,
Steve