If anyone has had trouble like I have with not being able to log into CafeNET with the new auto-login feature in 3.0 . (or any hotspot you have had trouble with)
I have found a fix for it as follows:
Download the app called "boingo Wi-Fi"
You dont need to run it, just install it on your ipod / iphone and it will disable the auto-login system.
You should then be able to login like you used to with OS 2.2.1
Hope this helps!