Lately, Firefox thinks loading the page like this is cool (click for big):
Problem is, it's not a network issue - the same page loaded in Opera (click for big):
And rather than post an image with IE working, well, just take my word for it that IE7 loads them correctly as well.
I changed absolutely nothing settings-wise, and while I noticed some ICMP packets being dropped as of today (from my router to the internet, I was losing between 20-30% of my ICMP traffic, but this could just be regular since I never test it) TCP packets were absolutely fine.
Help!
EDIT to clarify: any page loads like that if there are multiple images, it would seem. Nothing shows up in my router logs.