I have the same problem of flickering in version 10 and 11 (full ultra package)
The only blue ray capable unit is my computer
(windows7 / 64 bits / core duo quade 3.0 gHz / 8Gig Mem. / fast Hard drives)
After changing the blue ray collection at the store, I got the same problem again today.
So the problem was my computer, the software or the disc ?
I have Nero 10 mutimedia suite (latest version)
I never used it to play blue ray before, so I decided to give it a try
It works perfectly, very fast when advancing the fim etc... - works with no problem
The problem is not my computer cool !
So I'm certain that PowerDVD still has a major problems (even after installing the update of the 19/09)
I've been using powerDVD 6,7,8,910,11
very disapointed with powerdvd
Well at least I'm able to watch the movie now (with nero)
Canuc
(Senior System Administrator)