kmail has stopped deleting old files

[David Goodenough <david.goodenough@btconnect.com>]

I set up a filter which deleted files older than 30 days, and I used to be
able to go to a folder, press K to select them all, and then press Ctrl-J
in order to run the filters.

Now it has stopped getting rid of the old ones, no errors that I can see,
just leaves the folder as before.

This is Kmail that came with 2.2 (the one that is currently in testing).

Thanks for any thoughts

David