I'm having this problem with the client utility for setting up my Cisco WiFi card (cardbus).
The prefs won't save -- I get an error on opening to this effect. I've trashed the prefs a couple times, which doesn't fix it.
Also, the settings are lost upon waking from sleep. So, even if I keep the app open all the time, I still have to reset the settings after waking. Grrr.
Any ideas? Thanks!