TSSTcorp SN-082D

Hey, I have a dell inspiron 700m laptop and recently my TSSTcorp SN-082D DVD+RW burner has been taking forever to burn a dvd. Usually it takes about 10 minutes to burn a dvd (I have burning a full dvd, 4gb of data everytime). I use a program CloneDVD2 and set it to burn at maximum which I think is 8x. Recently and randomly some dvds take almost 1 hour to burn when other times they take 10 minutes, and I am burning the exact same DVD so it is not like I am burning more data on one versus the other. I have no idea why this is happening. I have attached a screenshot of the advanced settings of the primary and secondary IDE channels. But I have absolutely no idea what is going on. I just burned a dvd a minute ago and it says it took 9:45 and the one before that took almost an hour (I burned the exact same dvd!) so something is obviously wrong. If you have any ideas, let me know.