I have upgraded to Kubuntu Jaunty 9.04
This time, they have finally got it rt73usb wireless drivers right.
I have disabled my own complied driver before upgrade.
Now I am using default driver. I have been using it for a few weeks and so far no connection dropping and download speed is good.
One little surprise after upgrade was that my display was corrupted when it enters KDM, I can't even go to console mode with Ctrl-Alt-F1. I had to SSH into my machine from another computer and type:
aticonfig --initial
This configures a default set of display settings into my xorg.conf.
After this, everything is working great.
The only slight disappointment is that lm-sensors module for my phenom processor is still not available. I can only monitor using mobo sensors. Perhaps I'll try to compile my own module when I have some time later. Now I am just too busy at work and also all the wedding preparation.. sigh..