I did the blackra1n jailbreak on my 3G a couple days ago and everything seemed fine installing apps from Cydia and Rock. All of a sudden today, none of my app store downloaded apps would work, they would act like they were opening and then crash immediately. Native apps (mail, ipod, camera, etc.) and jailbroke apps continued to work fine. I tried rebooting several times and nothing helped. Then, I connected to iTunes on my laptop and then all apps started working fine. Has anyone ever seen anything like this? I'm new to jailbreaking so go easy if this is a dumb question....thanks!