Ok, this is the Holy Grail for some. This took me ages to work out what the problem was but finally i have got my iBook, OSX and the BT Home Hub 2.0 (the new black shiny one) working.
Now I had tried everything and I cant be assed to go back and try everything again..so here are a couple of things you might need to do..BUT first
go into the advanced settings on the Home Hub and make sure that in the wireless settings the network is only running 802.11 b/g NOT b/g/n. Changing this let me connect.
I also had been trying the std fix for wireless, putting the $ sign in front of the password..I cant remember if I had to so this or not in the final solution.
I also put mine on Channel 12 but I don’t think that made the difference.
I can literally switch the network to 802.11 b/g/n and my iBook won’t connect..switch to b/g and its off!!!!.
UPDATE: Just to add I’m running macs on both 10.6.4 and !0.5.8 with no problems now..although saying that, I’m moving my broadband and phone to Plusnet..BT charges and level of service are just terrible. When I was thinking of leaving them we got offered 4 different broadband/phone packages. Each time we said we would call back in a couple of days and every time we did the package offered didn’t exist. Even spoke to a supervisor and they said the sales person we spoke too the day before to was lying, BT didn’t offer such a package and then he offered us a different package. Surprise surprise when we called back two days later after mulling it over this package didn’t exist either!!!!! BT sales people in my experience just continually speak lies and act like con artists. Would never go back to them again. But the BT hub 2 (the black one) is running fine on Plusnet.