I have recently installed snow leopard (10.6.0) on my Mini 9 using the newest 8.4 RC of Netbookinstaller. Everything worked, except for bluetooth out of the box. A day later, my wireless stopped working. It will see wireless networks and connect to them, but will not deliver the internet. A reinstall of OSX did not fix the problem. After doing diagnostics on the connection it returned for about an hour and then died again. I've tried this with two reliable access points with the same issue on both.
Strangely, updating to 10.6.6 or 10.6.4 causes KP on boot.
Does anyone have any ideas on next steps to diagnose this?