burn DVDR faster than 1.30x

[Peter Magnusson]

I cant burn DVDR's faster than 1.30x or something like that. cdrecord says:

cdrecord: DMA speed too slow (OK for 9x). Cannot write at speed 16x.

hdparm says:

/dev/cdwriter:
  IO_support   =  1 (32-bit)
  unmaskirq    =  1 (on)
  using_dma    =  1 (on)
  keepsettings =  0 (off)
  readonly     =  0 (off)
  readahead    = 16 (on)

I dont understand why it is like this. DMA, 32-bit is on. Its using a 
Promise TX2 UDMA/133 card. Should be enough. LG GSA-4120B is the burner 
model.

     ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:DMA
     ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:DMA, hdd:DMA
     ide2: BM-DMA at 0xdf60-0xdf67, BIOS settings: hde:pio, hdf:pio
     ide3: BM-DMA at 0xdf68-0xdf6f, BIOS settings: hdg:pio, hdh:pio
hda: 240121728 s (122942 MB) w/2048KiB Cache, CHS=65535/16/63,UDMA(100)
hdb: 240121728 s (122942 MB) w/2048KiB Cache, CHS=65535/16/63,UDMA(100)
hdc: 240121728 s (122942 MB) w/2048KiB Cache, CHS=65535/16/63,UDMA(33)
hdd: 240121728 s (122942 MB) w/2048KiB Cache, CHS=65535/16/63,UDMA(33)
hdf: 320173056 s (163928 MB) w/2048KiB Cache, CHS=19929/255/63,UDMA(133)
hdg: 398297088 s (203928 MB) w/7936KiB Cache, CHS=24792/255/63,UDMA(133)

The burner is on hde. I use FC4 (2.6.10-1.770_FC3smp).
Anyone got a idea?