Sound card dissappeared?

[mike <mike bristolreccc co uk>]

I have a ISA sound card cs4237 which has worked fine through FC2 tests
thorogh to FC3 until yesterday.

Then I had an X crash, and since then it has dissapeared according to
the system

modprobe shows "no such device"

I have tried 

booting with stock kernel
running snddevices script
disabling all other isa/serial devices (manually/in bios)

anyone got any ideas

thanks