I have recently been trying to add sources in cydia and all seems to go well. after it says dowloading packages and all that with the blue loading bar when it is on the last downloading pakages load it pauses at anywhere from halfway to 1 mm from being finished and just stays like that. i have done everything from letting it sit overnight to re-jailbreaking to the newest firmware (3.1.2) but nothing seems to work. any ideas??