Hi, Since quite a while, there have been multiple issues with using a firewall and internet access problems on my wife's Powerbook. If the firewall is switched on, it is only a matter of time before the internet wifi doesn't work, with all four bands showing, and some sort of "self assigned ip address" showing on the network settings. The only thing that (sometimes) works to get the internet back is to run Onyx, sometimes many times, then after the obligatory restart I know it will work when the firewall asks something about "allow MDSresponder". Since this happens often, I have just chosen to turn the firewall off completely. With the firewall off, there is never a problem. Is there a fix to this? Otherwise, should I be concerned about not running a firewall? Thanks.