Spotty WiFi with The Wireless 4965 AG or AGN

The internet browsing experience on the little Dell M1330 was beyond awful, slow, intermittent, etc, a real PITA.
So a big of Google, and then, the magic started...
Had to edit the file:

/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
And then reboot the little lappie.
The file ended up like this:

[connection]
## wifi.powersave = 3
wifi.powersave = 2
So, a reboot later, and things look much, much better... Will keep testing for a couple of days to see how this goes.