Got V6 last year. Was ok for ages, then had the 'hanging at 24% buffering' problem, so unplugged and rebooted. This week it came back, but just switched the V6 off at the back, then back on.
Haven't checked Netflix since then, but it now randomly switches on to Netflix (with normal TV sound). Can get out of it by pressing TV guide, but obviously still a problem. Has happened several times tonight, so pretty frequent.
I'm doubtful that unplugging it from the mains will help, but will try it when I can. I'm standing this is a deeper problem. Missing my old TiVO now!