cs4281: suddenly not working anymore

[toblo]

I installed FC1 on Toshiba Satellite 1675 with CS4281 onboard.
The sound works great until today suddenly it stops working.

1. I run modprobe cs4281, there's no result is displayed.
2. Restart my notebook.
3. Rerun modprobe cs4281, gives me this result:
/lib/modules/2.4.22-1.2115.nptl/kernel/drivers/sound/cs4281/cs4281.o:
init_module: No such device
Hint: insmod errors can be caused by incorrect module parameters,
including invalid IO or IRQ parameters.
      You may find more information in syslog or the output from dmesg
/lib/modules/2.4.22-1.2115.nptl/kernel/drivers/sound/cs4281/cs4281.o:
insmod
/lib/modules/2.4.22-1.2115.nptl/kernel/drivers/sound/cs4281/cs4281.o
failed
/lib/modules/2.4.22-1.2115.nptl/kernel/drivers/sound/cs4281/cs4281.o:
insmod cs4281 failed

I didn't change anything on my system. Can anyone help?

Thanks,
toblo