I am having trouble adding data to a DVD+RW (Memorex) after adding data to the disc. After writing some data (about 100MB) to the disc (that can hold up to 4.7GB) I am unable to add anymore data to the disc. The "properties" of the disc tells me that the disc is full. Does anyone have any ideas? I have a HP notebook that using "Sonic". Thanks in advance for any help.