when ripping with smart-ripper, are a lot of "encrypted blocks" a problem?

im ripping a ~100 min movie and so far, 53% done, about 30% of the blocks are encrypted ones.

will this give me bogus results?

i ripped a dvd earlier and then flasked the first 3 minutes of it and the audio lagged the video by about 10 seconds. do encrypted blocks cause this?

thanks