It isn't just wireless connections that give problems!
I have been running Vista through all the betas, and Home Premium since its release, with no problems and using Live One Care. For the last two days I have been losing my internet connection, wired through a Via Rhine 11 Fast connection, with reports of low connectivity, and none of the steps to correct it work. I have removed my router but this made no difference. Re-booting sometimes fixes it but not for long.
Maybe related to this problem is that the Live One Care icon frequently goes red, reports that the firewall is off, and when I click on the 'Start Firewall' button LOC freezes, and I have to use the task manageer to shut it down. At the same time the Security Centre reports that the firewall is on.