Its already an older tread but I have the same problem and I dont have these registry keys.
I have windows 7 running and not sure that this might cause some troubles.
I installed all yesterday, webcam and debut to record the street in front of my house as I want to try to catch the person which is throwing doggiebags into the gardens and before our houses. I could catch that person yesterday as he/she dropped one right infront of the webcam within 1 hour 42 mins but after 1 hour the recording the counter kept going but the image was not, stayed fixed until I stopped the recording on 1 hour 42. ( and I soo hoped I had that person on tape ).
Now I have record 1 hour max and create new recording and continue now and this seems to work but cant understand why I cant get the recording going on for more then 1 hour.