Ran current Ubuntu off USB, needed to enable "Broadcom 802.11 Linux STA wireless driver ..." by clicking Apply Changes in Additional Drivers. Having done that was able to connect to wifi without problem.
Whilst connected, I "Installed" Ubuntu on my HP Mini 110, cleaning everything off the drive. Updates were downloaded and everything was peachy. Prompted to Reboot, I did so and encountered again the need to Apply Changes to get the wireless working.
But now, clicking on Apply Changes does nothing but reset the button to "Do not use this device". I cannot enable the Broadcom driver and, of course, cannot connect to wifi.
In summary: works fine when booted from USB; doesn't work when booted from installed Ubuntu.
Thx.