I had this problem since the beginning and thought it was a bug, but now it's starting to impact my functionality as wiki facilitator

and I no longer think it's a bug...
I'm using Vista prof. with SP1. I use Chrome and Firefox 3.6.21 with identical symptoms. Some pictures display correctly, I think these are inline pictures but I'm not sure. All others (I assume attached or uploaded pictures), they're typically under the post body, will show up initially as an empty frame but when the page has loaded only as a paperclip symbol with the filename as a hyperlink. Clicking on the link causes a error: "the connection to the server was reset". I can't save the images for offline viewing either because the extension is a php file...
I'm quite at a loss what the cause of this might be. I disabled my firewall as a test and restarted Firefox, but there's no change.
Since I can see that the images have been viewed a number of times the problem must be on my end, but am I alone having this problem?