the only issue I have had recently was trying to download the movie Darling Companion (from VOD, not BB). Anytime I tried to dload it, it just wouldn't finish the start-up process and kill the whole download thing altogether (no other movies would download even if you moved them to top of que). I played around for a few days and once I stopped trying to dload Darling Companion altogether, everything worked fine. I'm guessing there was an issue with that one particular "file" that was killing the system.
i just started using bb and yes, i have this problem. all other internet functions with my hopper are fine. blockbuster movies fail to download correctly about 3 out of 4 times. but if i keep trying i will eventually get it.