A question regarding step and breakpoints

Gentlemen:

I have an embedded system with a PPC8541 using remote debugging across =
the serial port. I am using Fedora Core 6 on my host along with gdb 6.3 =
cross compiled for the ppc target and Linux 2.6.17.11 on the PPC8541 =
target.

I can stop the kernel boot with 'kgdbwait' on the command line, startup =
gdb or ddd/gdb and set a breakpoint on do_fork which triggers reliably.

From there, I can delete that breakpoint, set a breakpoint further along =

in do_fork or continue using ddd to a location further along, but I =
cannot execute 'step'.

When I execute a continue from either the gdb window or the ddd window, =
I do see the message:

"Can't send signals to this remote system. SIGILL not sent.

Even with this message, I can still breakpoint, just not step.

Some insight would be appreciated.

Charles