Welcome to the Forum.
I believe you have a Typo and are actually looking for assistance with a Pioneer DVR-110D and not a DVR-100D.
Pioneer DVR-110D version 1.41 is the newest most current up to date current Firmware available for the DVR-110D.
You should remember that a DVR-110D is 3 years old. After awhile things do just wear out.
Suggest getting some Canned Air and gently trying to blow out the interior of your Pioneer DVR-110D and see if that helps. If there is a smoker in the house you might have to open the DVR-110D Drive case and using a Q Tip and isopropyl alcohol and gently attempt to clean the laser lens of any smoke residue. Using a cleaning CD Disk that has little brushes is not recommended because that can damage the laser and knock the laser lens out of alignment.
If the above doesnâ€™t correct the problem a new Pioneer DVR-115D is about 30 bucks USA from NewEgg (http://www.newegg.com).