my 48246S has been working fine for months, but two days ago my drive refused to burn any higher then 16x. if i try a higher rate the disc gets to about 7% and then the drive starts to spin but he stops. It does this over and over. Sometimes I cannot get it to stop doing this even after i have cancelled the burn and causes me to restart my computer. I am using windows xp professional and im using nero, all other burning programs also do this.
Is it a different media that Smart-Burn is limiting you on? That happened to me on eWorks discs. I emailed the company, and was reassured they were really 48x certified. I turned off the Smart-Burn feature (burn proof is always enabled) and the discs were fine at 48x burning speeds.