After i reboot my iphone or installing something from cydia that requires a respring, it will not open any apps. the app turns grey when tapped, but will not open. The only fix I've seen for this is another respring via SBSettings, but I have to do it everytime. This problem seems to have even carried over after I did a firmware restore (3.1.3 AND 4.0.1) and a restore from backup. The problem is still there when the device is not jailbroken yet. any info will be appreciated. Edit:: I don't know if this helps, but it started happening after I updated some package in cydia, I forget the exact name, but I think it started with "lib," but it was no extra theme or tweak that I installed.