Bug#427406: metacity: No more mouse/keyboard-input possible, after closing crashed application

[manphiz]

 >I somehow resist the possibility of making my system unstable again,
 >since everything else works fine with Testing and upgrading to 2.18.3
 >didn't help. Additionally, I noticed no hint showing that this
 >problem was solved with never versions.

Some search work at http://bugzilla.gnome.org shows no similar report, 
and as it is unreproducible anywhere, there's no reason for the upstream 
or Debian maintainer to address such bug, which doesn't prevent the 
possibility for the bug's silent disappearance either. Moreover, there's 
no difficulty to downgrade back to 2.14.5 if something still goes wrong. 
Finally, as the only one encountering this bug, only you can tell 
whether 2.18.5 is ok. So why not give it a shot? :)

P.S.: No offense, but I really doubt such a problem is necessary to be 
set as grave severity.