Systems hangs when "module unloading" is activated

[Vogi]

Hello,

i have the following problem:

when i activate "module unloading" in the kernel config, my systems hangs wheh the new kernel is loaded.
The last thingt that is done is loading capi.
I compiled the ISDN drivers as modules and it works as long as "module unloading" is not activated.

What could be the problem?

Thanks a lot,
Vogi.