Nero only thinks my LiteOn CD writer can write at 24 speed instead of 52 speed

When I only had a LieOn CD writer I used Nero 5.5 which came bundled with the drive. I was able to write CDs at 52 speed.

I then bought a DVD writer and upgraded to Nero 6 so that it would recognise my Pioneer 106. However now Nero reports that 24 speed is the maximum for my 52 speed LiteOn CD writer.

Anyone any ideas as to why? It’s not the media as I’m using the same media as before when it did write at 52 speed with version 5.5.

Is it Nero 6?