With me, i first shrink the dvd using dvdfab. lets say it has to do a compression down to 56% percent quality (which i only do with discs that are series, like farscape, bsg, sg1, that kind of stuff), it takes about 15 minuts to shrink the disc, then burn it. If its a movie, or something it doesn't have to shrink, it usualy takes between 10-15 mintues.
DVDFab, and ANYdvd work great for me. I've had a few discs with copyright protect that i couldn't get past, until i used ANYdvd. Worked fine.