Samsung Galaxy S :: Unable To Add Wireless Network

I have a problem with a brand new Galaxy i9000 and the wifi. I have managed to add one wifi network to it that I use at home. I have a second wifi network that I want to add, called cat, but when I try to add it from the Add wifi network place, it gives the error: Unable to save the network. i have tried a power on and off. Is there a maximum number of wireless networks one can save, or is there a problem with my actual 'phone? The phone is very laggy as well, and almost impossible to use when 3G is active. (Load averages are as high as 30 sometimes).