for some reason while browsing sites some images tend not to show up for no apparent reason.this doesnt happen to all the images on a site but to only a few.I know for a fact that i can view these images from my laptop.
If you use Internet Explorer try right clicking and "Show Image". Sometimes when a page loads, not all of the images manage it. Alternatively, it might be that you have a firewall (or something like it) on your desktop PC which is blocking out adverts, in which case I'd be grateful.