I use the SAM 800mhz with 1 gig every day and it never GR or freezes unless I am using IBrowse... And this isn't likely to change unless someone is developing a new version of IBrowse... So... I accept this because I still have uses for IBrowse... the freezes (because it doesn't GR) are so few and far between its hardly even worth worrying about but to exclude them would be lying... heh
My SAM 667mhz is happily packed in its antistatic bag, destined for a life of backup but in reality probably won't be used for that capacity...
Enjoy your new SAM!