iPhone 3G iOS4 Jailbreak, wifi with login screens don't work
I am fairly new to the jailbreak business (though I love it already), I jailbroke my 3G with redsn0w 0.9 and everything works perfectly. Except the Wifi.
It doesn't work for those hotspots that popup a login screen, I basically do not get the popup login screen at all, I try connecting to a network, it connects but drops the connection a few moments later (I'm assuming it disconnects because I couldn't log in?). Other than this my phone can connect to all wifi networks fine. Oh and I have tried this at various places, hotels etc where I am sure there are popup login screens.
It worked before I jailbroke my phone.
Any advice on this?
EDIT: I have tried forgetting the network, restart, reset network settings, restart. Doesn't work.