RC4 works without ACPI (even in SMP mode, using the older OS2APIC.PSD), but I haven't had time to try that with RC5. Only the Broadcom NIC works, using unsupported mode with GENMAC, and a different driver than supplied for a similar device. The "supported" wireless NIC (Intel 4222 3945ABG) doesn't work, at all (of course, both work in windows).
I have updated to ACPI 3.10, with no change in operation.
All of that information has been posted to the bug tracker, at Netlabs. I posted, to point out the limitations of the feedback mechanism. It would probably be better, if there was an option to package the information, for transmission, using another, working, system (even windows), if necessary.