Odd - I just posted a bunch of pics and the only problem I found is that you can't add or replace a pic during an "edit" of an existing post (whch I have already reported in the "problems" forum, fo rsomeone to look into).

In order to determine whether there is an issue with the pic itself - have you tried using a different pic (any pic - you can use the test-forum to play with this if you want) ?

What file type is it ? I believe that only gif & jpg are supported.

Gordon