[ubuntu-uk] No decrypt progress bar

[mac]

I recently upgraded my systems to 12.04.2, and use gnome classic.  I use the seahorse-nautilus 'decrypt' to open big .pgp files.  This used to display a progress bar, but no longer does so.  I've spent a few days searching for information / fixes to no avail.

Does anyone have a suggestion about how to get the decrypt progress bar in gnome classic on 12.04?

TIA

mac