Hello, Today I experimented some strange behaviours with announcements that I didn't have in some previous moose images (moose in now based on Pharo 1.3). I think that there was some changes related to announcements in pharo recently, but I could not be sure it is related. At one point in my code I have: browser on: AnnouncementClass send: #actionSelector browser announce: anAnnouncementClass. .... .... The behaviour I have is like if #actionSelector was executed asynchronously from the rest of the code below 'browser announce: ...' . Not sure but there is maybe something with exception signals. If any signal is emited in #actionSelector it will not execute the rest of the method. I was at least able to write a test that do not pass in latest pharo 1.3 Gofer new squeaksource: 'DelaunayTmpStuffs'; package: 'ExampleAnnouncementProblems'; load.