Seahorse locks my desktop

[Raffaele Ricciardi <rfflrccrd gmail com>]

[I've cancelled the sending of this message to add some info about my 
system.  I apologize if it gets sent twice.]

Hello,

GNU Emacs' interface to GnuPG calls "gpg2" which, since GPG_AGENT_INFO 
refers to "seahorse", is run with the "--use-agent" option, and thus 
calls Seahorse.

If by accident I switch to another (fullscreen) window while Seahorse is 
running, I can't switch back to Seahorse's window anymore (Alt-Tab does 
not work), and to all effects, my desktop is locked and I have no option 
other than to force shutdown by keeping the power button pressed for 6 
seconds.

Is there any way around this?  I can't find any after having read 
"seahorse --help", "seahorse --help-gtk", "man seahorse", "info 
seahorse" and searched the Internet.

Thank you.

Software:
- Seahorse version: 2.30.1
- GnuPG version: 2.0.17
- Debian GNU/Linux version: 6.0.3
- Gnome Version: 2.30.2
- Kernel version: Linux debian 2.6.32-5-686