I'm not sure if this worthwhile to others, but I'll post it anyway. My WiFi adapter (Motorola WPIC810C PCI, Broadcom 4306 chipset) is working fine under 5.1.1. I had to script the boot seq for it (to explicitly load the firmware and NDISWRAPPER), but what the hell. However, 5.1.1 seems to change the device name w/ each boot. This time (as I type), it's eth1, but the next time it'll probably be eth0. For the record, this PC is a WiFi-Ethernet router, so it does have two live networking devices.

No great tragedy or inconvenience, but probably worth noting for the future....

PS: Something else strange, which only happens w/ this distro is:

iwconfig eth1 essid "MyLocalSSID"
doesn't work from the startup script ! No error msg, just doesn't work. As soon as I manually type this line, WiFi is operational, otherwise only the 1st char of the ESSID is passed from the cmd-line. Truly strange....