I'm sure the first time I ran JoikuSpot, a message popped up stating it was going to make changes to the WiFi settings to allow the program to work. Since installing JoikuSpot, my home router works fine, but I have been unable to connect to any BTOpenZone hotspot - just get a message that I am unable to obtain an IP address.

It could be a bug in how ad-hoc networking is implemented in the N900?