I specify in my firefox shortcut that I want firefox to open the profile manager and allow me to choose which profile to use. My family shares a single windows login, and we just want to open firefox and allow us to choose our own profile. This works, except there is an annoying checkbox on the profile manager window that if checked, prevents the profile manager profile selection dialog box from ever appearing again even though -p is explicitly given on the command line. The only way I can recover when someone accidentally clicks this checkbox before clicking OK ( which happens about once a month ) is to delete all profiles and start again letting firefox sync put most of it back, It would be nice if that option were not even presented if -p is specified on the command line since -p means you DO want the profile manager dialog to appear. Barring that, is there any way short of deleting all profiles to get the profile manager dialog to appear once someone accidentally clicks that button?