It doesn't just happen on mozilla (netscape/firefox) it also happens with IE (which is what i used at the library)

What *might* have happened is the download completed (with errors?), but for some reason windows couldn't copy (move) the file from the temp folder to the permenant folder you wanted. I never did get darwin downloaded last night (3 attempts, argh).

I guess i'll head back over to apple's open source site and try again...