Does your work use a filtering program like Websense to block certain image files, perhaps?
If this is in response to me, both the PC and the laptop are private property. I'm current on my work laptop and experience no problems. Weird huh?
PC: W7, FF3.5, Kaspersi AV - Works
Laptop: Vista, IE8, GData AV - Does not work
Worklaptop: XP, IE8/FF3.5, Symantec AV - Works (both browsers)
All behind the same router at home.
But no matter, it's obvious that the problem exists on my side. I'll figure it out eventually. Or not.