What CPU are you using? Our kernel is for 686, which means AMD Athlon, Duron, Sempron, Athlon 64 and Intel Pentium 2, Pentium 3, Pentium 4, Pentium M and derivatives of these. I used to see lock-ups and reboots just after the kernel is loaded (loke you seem to see) when using an earlier CPU than the kernel was built for. We don't have a 386 version of the kernel shipping.
If your CPU is from the range specified above, then I would need some more info on your hardware configuration.