WPA Working Smoothly on Ubuntu Intrepid ( 8.10 )

It is a nightmare to wait for the new release of Ubuntu 8.10 for me. Plus I accidentally crashed my old Ubuntu 8.10 by mistyping a rm command. So there's no reason why shouldn't I install alpha 6 version of Intrepid several days earlier than the plan. What thrilled my is that I found the wireless card of my Gateway T-1616, which is an rtl8187b, is working perfectly for a WPA wireless network. The weird inexplainable behaver before, such as connects to a WPA wireless signal and then works on a strength of 0%, are all gone! What's better, I can really use the new-human theme for a while!