Do not start the browser automatically
It was reported that iceweasel autostarting is suboptimal: its startup timing is a bit weird wrt. the session startup: depending on many parameters, it pops up at a unexpected time, in a way that surprises many users ("oh, what's happening?!") and makes the Tails UX seemingly random.
The main reason why we autostart iceweasel was to make it clear to the user when Tor is ready enough to browse the web.
So, I propose we replace iceweasel autostart with a "Tor is now ready!" desktop notification.
However, once we don't autostart iceweasel, many users will probably click its launcher in the GNOME panel at various times in the time sync' process, so we should have this launcher start a wrapper that accordingly warns if Tor is not ready yet, before allowing starting the browser anyway (because currently, this is the browser that should be used to reach the LAN, so users should be able to use it offline).
To end with, if we implement this, the profiling script should probably be adapted to wait for another process.
The profiling script was actually just waiting some time