downloaded yesterday the new update and I am pretty happy, everythings seems to be working and similar to the previous built 266. The thumbnail in the multimedia is a bit slower as some reported, but not too painful or annoying, it is noticable though..however, I gained the ability to review all my multimedia files on the SD card via "All Songs" or "All Videos" where in the past the SD data wouldn't come up on the default view but only through "Explorer."
I also feel that the media player for watching videos is extremely sharp...it gets better with every update...to a point, amazing...wifi has been great with 266 and this latest built seems to be very stable too..no issue.
The update process was very smooth..either the process is getting better/easier or maybe I got it down packed to a point I can do it blindly...
...happy upgrading all!