Stlinux-2.4 boot trouble on hdk 7105 board

hello all,
i'm working on Fedora 11 i've downloaded and installed Stlinux-2.4, then i've configured and compiled the kernel for my board which is: the hdk7105 with an st40-CPU, i've got my vmlinux ready for the boot.
Everything went very well until this step, problems start during the boot step.
Actually at first the boot went well but at the end i got the following error :

kernel banner in target memory : 4
Warning: do you want to continue
if the kernels don't match the debugger might crash(y/n)? y
a problem internal to GBD has been detected
further debugging may prove unreliable.
Create a core file of GDB(y/n) ?

any idea what could be the cause of the pblm ??