i have cydia and i keep jailbreaking it and restoring it because my cydia keeps having error POSIX: timed out or host unreachable or cached failure. anyway i figured out that when i boot cydia at the top it starts downloading the release and then says errors like cached failure at the top. i really need help i cant download anything. my wifi is full and very fast on my ipod so not that. i have also updated cydia. it did not fix it. i live in england please help!!