irq timeouts error-cdrom ?

[Balbir Thomas <thomas.1037@osu.edu>]

Hi,
I recently switched from RedHat 6.2 to potato. I have a IDE 44x cdrom that is giving the following errors (which did not happen previously) 

1) Most of the time the error is :

hdb: irq timeout: status=0xc0 { Busy }
hdb: ATAPI reset complete

2) Sometime I also see some thing like this :

ttempt to access beyond end of device
03:40: rw=0, want=33, limit=0
dev 03:40 blksize=1024 blocknr=32 sector=64 size=1024 count=1
isofs_read_super: bread failed, dev=03:40, iso_blknum=16, block=32
VFS: Disk change detected on device ide0(3,64)
cdrom: open failed.
VFS: Disk change detected on device ide0(3,64)
VFS: Disk change detected on device ide0(3,64)
ISO 9660 Extensions: RRIP_1991A

I am not very experienced in these matter and can't figure what is going wrong. 
Could you please give me a tip or two on what to do, or direct me to the appropriate literature ?

Sorry about this repost, I forgot to put the subject on the last one. 

Regards
Balbir Thomas