Slow copy from CDROM

Hi guys
a simple inquirie, that I'm sure you'll have answers on :)
I have a problem with a cdrom of mine,
It work perfect Usualy... except under linux :)
I'm trying to copy from the cd to my HD, and the transfer rate is from 1.5Mb (rarely) to an average of 50Kb/Sec... which doesnt satisfy me at all!

I though that mabye the dma wasnt on... but it is...
I dont really know if any other param could change something... so here my reading on hdparm...

Code:

---

/sbin/hdparm /dev/hdc

/dev/hdc:
 HDIO_GET_MULTCOUNT failed: Invalid argument
 IO_support  =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly    =  0 (off)
 readahead    = 256 (on)
 HDIO_GETGEO failed: Invalid argument

---

Thanks a lot for your suggestions

does this happen with only a certain cd? or all cds?

pretty much every cd's..
most of which arent working well are copyed one...
all in perfect "readable" condition

what's the speed of the cd drive?
-lakerdonald

52X

Ouch. That's strange.

That is weird... I don't think this is it, but check what the dma settings are in the BIOS.