I just got my 770 last Saturday and have reflashed it probably an average of twice per day since then because of what may be the same problem. For me, it isn't just the scroll bars, but all of the widgets: frames, submenu arrows, sliders, radio buttons, etc., all mysteriously disappear after a while.

It is always after a reboot when it happens to me. I'm trying to narrow down the software that I install that may be causing it, and it seems like it might be related to the souped-up Busybox with ipv6,iproute,netcat,ping, etc. Do you have that installed?

I am still testing, but I just had it happen again an hour ago, and it was the second reboot after installing Busybox when the problem happened. No new software installed or system changes before the last reboot. Of course, it is possible that it is cause by interaction between two packages, which could mean a lot more reflashes before I'm done!

Anybody else seen something similar?