kernel-2.6.5 don't detect my cdrom

[Mauricio Rios-Momberg <mrios@ifc.unam.mx>]

 Hello, I've installed sarge:linux26 (kernel-2.6.3)
and everything was OK. But then, since my machine got
two processors, I run:
    apt-get install kernel-image-2.6.5-1-686-smp
and now my cdrom is not detected.

Here is a block of messages of 2.6.3 booting:
---------------------------------------------------------------------------
Real Time Clock Driver v1.12
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
hdc: _NEC CD-RW NR-7800A, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hdc: ATAPI 40X CD-ROM CD-R/RW drive, 2048kB Cache
Uniform CD-ROM driver Revision: 3.20
NTFS driver 2.1.6 [Flags: R/O MODULE].
---------------------------------------------------------------------------

and here the corresponding block in 2.6.5 booting:
---------------------------------------------------------------------------
Real Time Clock Driver v1.12
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
NTFS driver 2.1.6 [Flags: R/O MODULE].
---------------------------------------------------------------------------

Please help me fix this. Thanks

-- 
Mauricio Rios-Momberg
Instituo de Fisiologia Celular
Universidad Nacional Autonoma de Mexico