I did some googling and this doens't seem to be a normal problem. The best solution seemed to be to flash a new kernel file with Odin as a PDA. Used some old Voodoo-kernel but that didn't solve the problem.
Im using XWJS8 and baseband XXJQ1. I guess a new kernel may be the solution but I dont know which I should use?
Otherwise the ROM is working like a charm. I've been using your ROMs for a while now and can say I'm very pleased.