After a registry cleaning about 2500 lines are ready to be deleted.

I select them all and press delete.

Always a remnant of 80 lines are not deleted.

If I select the last line I can delete that line, but I have to do that 80 times manually.

Why can't I delete all selectedt lines in one time.

As far as I remember, that's a known problem in PT 2008 and it still could happen in beta 2009 with huge numbers of lines to fix/delete (at least I have noticed that while testing the beta's 2009).