Just out of curiosity, I went directly to Debugger allInstances size and got zero :) This is in a far from fresh 1.1.1 image. I do not use eCompletion or AutoTest. Bill ________________________________________ From: pharo-project-bounces@lists.gforge.inria.fr [pharo-project-bounces@lists.gforge.inria.fr] On Behalf Of Mariano Martinez Peck [marianopeck@gmail.com] Sent: Monday, December 06, 2010 4:26 AM To: Pharo-project@lists.gforge.inria.fr Subject: Re: [Pharo-project] Debugger not closed issue ? I don't know why nor when, but someone once suggest me to always do 3 timesRepeat: [Smalltalk garbageCollect]. Can you check: Debugger closeAllDebuggers. 3 timesRepeat: [Smalltalk garbageCollect]. Debugger allInstances size. If this works, then it would be nice to have someone that explains to us haha