Friends, This week I downloaded the version switcher for PowerDVD from the link found here. My AVG reported that there was a Trojan in the exe. I verified this with a McAfee on a second system so did not install it. Instead I downloaded the CMD version of the utility which checked out just fine. HOWEVER after installation according to directions I find that within a few days (first time I tried to watch HD content) that all RIPs either HD or Blu-Ray cause unwatchable stutters. This is not only on New rips but those I have successfully watched before with PDVD 3319a. It should be noted that Standard DVD's play just fine. I restored the main system using Ghost to a few days prior to installing the switcher and these same rips work just fine now. YMMV but this dude is going to stick with 3319a and avoid the switcher. I'm afriad I'll just have to wait for the guys at Slysoft to kill Blu-Ray protection and find a work around for playback from HDD. If you plan to use the switcher I strongly urge you to do a full system backup prior to its installation so if you have the same problem you can restore your system. It's a lot easier then blowing off your hard drive and reinstalling everything.