“We have fixed a few recent bugs – we are aware the progress bars for uploads had been failing to update, this is now resolved.
We have also added a feature to let you un-expire a file if it’s picked up (For free), you can undelete by looking in your history and clicking on one of the files, if the file is able to be unexpired it will show a link.”
I can verify the progress bar now works under Firefox 1.5.03/Windows XP, but the main send form window (or tab) still triggers the “unresponsive script” problem after the progress bar closes. Sending does work, though, as it has done despite the problems with the progress bar.