What is going on. I get (n items remaining) Downloading picture... and then nothing. Very frustrating when you are trying to enjoy this site.

That might be an issue with Explorer.. try clearing cookies/temp files in the tools/options window. Deleting the temp files and temp identities manually also should help. I've had the same thing happen to me before, even with the old server and other webboards, after I did the above hasn't happened since.