cd burning fails in 9.1

I am having trouble burning cd's in 9.1, Specifically using cdrecord from aa konsole or k3b the burn dies and locks up the machine about 80% of the way through. Using exactly the same hardware I can burn cds in SuSE 9.0 and Knoppix 3.4 either using the live cd or from a hard disc install. cdrecord scanbus gives the following warning : Warning: Using ATA Packet interface. Warning: The related Linux kernel interface code seems to be unmaintained. Warning: There is absolutely NO DMA, operations thus are s low. Can anybody assist with this please ? Thanks Mike