In 8.0.3 (and as far as I can see it wasn't a bug fix with 8.0.4) when I try to remove all unused audio there are lots, sometimes hundreds / thousands of files that remain. I'm definitely waiting for all files to be revealed, and I can blast my undo queue.. it still makes no difference.
The only way to work around this seems to be to close the session and open it again, which is a bit of a hassle when trying to fire out a pickup session quick-fast.
Can anyone shed some light on why PT might do this or is it more likely that it's a bug??