About cydia crashing after restarting?

Hi friends I got one problem on jail breaking my iOS, I have iOS 6.0.1, I jailbreak it with the help of redsnow and I have cydia on my phone, when I restart my iPhone my cydia, safari, weather, calendar are crashed I rejailbreak it and I got them back but when I restart my iPhone they repeatedly crashed, please help me frnds

Your JB is still tethered, you have to boot tethered with redsn0w

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