[2.4.21] CD-Writer Prolblem

[ced2]

Hi,

I'm having trouble with my cd-writer :

/dev/hdd:

  Model=Hewlett-Packard CD-Writer Plus 7500, FwRev=1.0a, SerialNo=YMT3WLUJLS
  Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
  RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
  BuffType=unknown, BuffSize=0kB, MaxMultSect=0
  (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
  IORDY=on/off, tPIO={min:180,w/IORDY:120}, tDMA={min:120,rec:120}
  PIO modes:  pio0 pio1 pio2 pio3 pio4
  DMA modes:  sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2
  AdvancedPM=no

It is recognized with linux 2.4.18 (doesnt work, but recognized), and 
isnt with 2.4.21. My box freeze at its detection.
I've tried ide-scsi, it complains about a timeout, and freeze too.

I'm currently locked to linux 2.4.18, and thats a problem for me 
(pthreads bug, etc..).

Can someone have a tip, an idea, or something ?