I have had it jailbroken for about 3 months now, all of a sudden Cydia won't work for me. Everything loads and it downloads all of the packages it needs and what not. I can't download any new themes, sms, etc. off of it now comes back with the error message..
http://i31.photobucket.com/albums/c375/allaboutwrx/1ff78dd4.jpg