Hi, We are experiencing a deadlock in Socket>>waitForDataIfClosed: The problem occurs on Pharo11/Pharo12/Squeak41 only when using the Cog VM. In our particular case, the socket connects to a GOODS database and it started occurring with a growing amount of data (so longer connections, more data transfer). When you open a debugger on the deadlocked process and proceed the process, it will simply continue and finish without problems. We are using Cog VM of 4 october, downloaded from Eliot's website (VM.r2316/) Before I start isolating the problem and reproduce it without requiring GOODS (it's just an http socket anyway): Is anyone else experiencing similar issues here? Is there a fix in more recent versions? cheers Johan