Working ok for me.
How are you trying to do it exactly?
Reply to post
Click 'Manage Attachments' which opens a new window
"Upload File from your Computer"
Navigate to the file on your PC, using the "Browse" button
Filename appears as:
C:\Documents and Settings\****\Desktop\bj_sankeys_horn.jpg **** being PC name
Then you click on 'Upload', then Submit reply