I have been using mine for acouple of months now for gigs. As I said before NO problems at a gig, jsut at home, and then rarely. the issue yesterday was rare, in fact the first time it has taken more than 3 reboots, again AT HOME.
I think the difference is I do lots of tweaking this and that and changing this and that and maybe its my fault in that I push buttons too quick.
But on the job , NO issues at all. Same as Frans first experience as noted above, I turn on at a gig and then turn off at the end.