Hi Hannes,
HH> self compileHardCodedPref: #cmdGesturesEnabled enable: false. "No halos, etc." HH> does the job.
haven't done this for a long time. So I looked up my ooold deployment folder and found that you had to file in the attached changeset from Squeak 3.4. Then it would work.
Just checked on a trunk with cog VM
after filing in the cs the magic incantation changed to: Preferences disable: #cmdGesturesEnabled.