What package provides the 'This program has died unexpectedly' dialog?

[Bart-Jan Vrielink <bartjan@vrielink.net>]

Hello,

See subject. I might want to file a bug on it, or see if some bug
already is filed.
The popup alerting me that an application (Evolution, which usually
behaves fine on my system) has died (on :0.1) appears on :0.0 instead.
Not a big problem, but the 'restart' option it offers me does restart
the application on :0.0 instead of :0.1

PS. Please CC me, I'm not subscribed.

-- 
Tot ziens,

Bart-Jan