iPod touch Jailbroken wifi trouble!?!?!

[rhcp1253]

i recently upgraded to 3.0 firmware and Jailbroke using redsn0w. Everything worked fine then all of a sudden wifi stopped working. i can connect to wifi fine but whenever i start cydia wifi bars dissapper. Please help!!!!

 

[mi986]

Have you tried restoring and re-jailbreaking?